- published: 08 Jan 2021
- views: 189767
Mesonephros
The mesonephros (Greek: middle kidney) is one of three excretory organs that develop in vertebrates. It serves as the main excretory organ of aquatic vertebrates and as a temporary kidney in reptiles, birds, and mammals. The mesonephros is included in the Wolffian body after Caspar Friedrich Wolff who described it in 1759. (The Wolffian body is composed of : mesonephros + paramesonephrotic blastema)
Structure
The mesonephros acts as a structure similar to the kidney that, in humans, functions between the sixth and tenth weeks of embryological life. Despite the similarity in structure, function, and terminology, however, the mesonephric nephrons do not form any part of the mature kidney or nephrons.
In humans, the mesonephros consists of units which are similar in structure and function to nephrons of the adult kidney. Each of these consists of a glomerulus, a tuft of capillaries which arises from lateral branches of dorsal aorta and drains into the inferior cardinal vein; a Bowman's capsule, a funnel like structure which surrounds the glomerulus; and a mesonephric tubule, a tube which connects the Bowman's capsule to the mesonephric duct. A unit consisting of a single glomerulus and the Bowman's capsule surrounding it is called renal corpuscle, and a unit consisting of single renal corpuscle with its associated mesonephric tubule is called a "nephron" or "excretory mesonephric unit".
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Mesonephros
Podcasts:
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Development of the Kidneys | Renal Embryology | Development of the Urinary System | Embryology
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesonephros and Metanephros). I hope it helps! ☀️ 🌟What's in this video? 0:00 - Intro 0:12 - Anatomy 0:49 - Stages of Renal Development 1:30 - Pronephros 1:57 - Mesonephros 2:42 - Metanephros ✨ Other videos you may need : 🔅 Development of the Respiratory System: https://youtu.be/_nvdIKdPB3o 💫 For more videos like this, subscribe to my channel! Byte Size Med: https://youtube.com/channel/UCZghvlgylH3r_CWfA18eFRg 📚Factual References & for Further Reading: - Langman’s Medical Embryology - The Developing Human, Clinically Oriented Embryology - Openstax Anatomy and Physiology https://openstax.org/details/books/anatomy-and-physiology - Openstax Biology https://openstax.org/details/books/biology-2e (The last tw...
published: 08 Jan 2021 -
Development of Kidneys(1)-Pronephros and Mesonephros - Dr. Ahmed Farid
First part of development of kidneys and ureters including general ideal about the 3 renal systems (pronephros, mesonephros, and metanephros) in addition to detailed demonstration of pronephros and mesonephros.
published: 26 Mar 2020 -
3D Kidney Embryology Part 1: Intermediate Mesoderm - Urogenital Ridge - Nephrogenic Cord
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the formation of Urogenital ridge, Genital ridge and Nephrogenic cord. How the primitive kidneys like Pronephros, Mesonephros and Metanephros develop. With the embryonic folding, along with other components of trilaminar germ layer, the intermediate mesoderm also folds. At the cranial and caudal end of the embryo, there is no intermediate mesoderm. The intermediate mesoderm and the paraxial mesoderm get separated from the lateral plate mesoderm. Paraxial mesoderm goes on to form the vertebral column and contributes to the muscles and skin formation. While the intermediate mesoderm is now behind the lateral plate mesoderm. Specifically, it is behind the intraembryonic somatic mesoderm near its junction with th...
published: 20 Dec 2022 -
Building the Body's Filters: A Look at Kidney Development
Kidney development is a complex and highly regulated process that begins early in embryonic development and continues throughout fetal development. The kidneys are vital organs responsible for filtering waste products and excess substances from the blood, maintaining electrolyte balance, and regulating blood pressure. Understanding kidney development is crucial because any disruptions in this process can lead to congenital kidney abnormalities or other kidney-related disorders. Here is an overview of the key stages of kidney development: 1. Pronephros (Weeks 4-5 of Embryonic Development): Kidney development starts with the formation of the pronephros, which is a very rudimentary and non-functional set of kidneys. They play a minimal role in waste elimination. However, they are essential ...
published: 02 Sep 2018 -
kidney development
published: 17 Jan 2019 -
12 The Development of the Urinary Tract
The development of the urinary tract is a complex process that occurs during embryonic development and is essential for the elimination of waste products from the body. The urinary tract includes the kidneys, ureters, bladder, and urethra. The development of the urinary tract begins during the fourth week of embryonic development, when the pronephros, or the first functional kidney, begins to form. The pronephros is a temporary structure that is replaced by the mesonephros and ultimately the metanephros, which is the final functional kidney. The metanephros arises from the intermediate mesoderm and begins to form during the fifth week of embryonic development. The metanephric duct, which connects the developing kidney to the bladder, also begins to form at this time. The development of ...
published: 17 Aug 2021 -
Development of urinary system Part 1| Pronephros and mesonephros | Urogenital system Development
Development of urinary system is explained in easiest way. Development of pronephric and mesonephric kidneys. Development of pronephros and mesonephros. Urogenital system Embryology. Urinary system Embryology
published: 10 Dec 2021 -
Urogenital System 3 Development of the kidney mesonephros
published: 31 Oct 2015 -
Vertebrate Kidney Variation | Pronephros,Mesonephros And Metanephros Kidney | BS Zoology | BSc, MSc
#VertebrateKidneyVariation #evolutionofvertebratekidney #evolutionofkidneyinvertebrates #evolutionofkidneyinvertebratezoology4thyear #OpisthonephricKidneyBSZoology #ArcheonephrickidneyBSZoology #metanephrosmesonephrosmetanephric kidney #mesonephrickidney #mesonephrictubules #metanephricmesoderm #pronephrickidneys #metanephric #mesonephrickidney #mesonephricvesicle #metanephricdiverticulum #metanephricblastema #themetanephricdiverticulum #protonephrickidney #archionephrickidney #opisthonephrickidney #archinephrickidney #kidneydevelopment #mesosnephrickidney stonespronephric #developmentofmetanephros #typesofkidney #permanentkidney #kidneydevelopmentstages #succesionofkidney #vertebrateskidneyfunction #evolutionofkidney #vertebratekyaha #classificationofvertebrate #vertebratekalakshan #verte...
published: 10 Jul 2021 -
Mesonephros.
published: 06 Dec 2020
developed with YouTube
5:31
Development of the Kidneys | Renal Embryology | Development of the Urinary System | Embryology
- Order: Reorder
- Duration: 5:31
- Uploaded Date: 08 Jan 2021
- views: 189767
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesonephros and Metanephros). I hope it helps! ☀️
🌟What's in this video?
0:00...
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesonephros and Metanephros). I hope it helps! ☀️
🌟What's in this video?
0:00 - Intro
0:12 - Anatomy
0:49 - Stages of Renal Development
1:30 - Pronephros
1:57 - Mesonephros
2:42 - Metanephros
✨ Other videos you may need :
🔅 Development of the Respiratory System: https://youtu.be/_nvdIKdPB3o
💫 For more videos like this, subscribe to my channel!
Byte Size Med: https://youtube.com/channel/UCZghvlgylH3r_CWfA18eFRg
📚Factual References & for Further Reading:
- Langman’s Medical Embryology
- The Developing Human, Clinically Oriented Embryology
- Openstax Anatomy and Physiology
https://openstax.org/details/books/anatomy-and-physiology
- Openstax Biology
https://openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.
https://wn.com/Development_Of_The_Kidneys_|_Renal_Embryology_|_Development_Of_The_Urinary_System_|_Embryology
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesonephros and Metanephros). I hope it helps! ☀️
🌟What's in this video?
0:00 - Intro
0:12 - Anatomy
0:49 - Stages of Renal Development
1:30 - Pronephros
1:57 - Mesonephros
2:42 - Metanephros
✨ Other videos you may need :
🔅 Development of the Respiratory System: https://youtu.be/_nvdIKdPB3o
💫 For more videos like this, subscribe to my channel!
Byte Size Med: https://youtube.com/channel/UCZghvlgylH3r_CWfA18eFRg
📚Factual References & for Further Reading:
- Langman’s Medical Embryology
- The Developing Human, Clinically Oriented Embryology
- Openstax Anatomy and Physiology
https://openstax.org/details/books/anatomy-and-physiology
- Openstax Biology
https://openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.
33:48
Development of Kidneys(1)-Pronephros and Mesonephros - Dr. Ahmed Farid
- Order: Reorder
- Duration: 33:48
- Uploaded Date: 26 Mar 2020
- views: 84782
First part of development of kidneys and ureters including general ideal about the 3 renal systems (pronephros, mesonephros, and metanephros) in addition to det...
First part of development of kidneys and ureters including general ideal about the 3 renal systems (pronephros, mesonephros, and metanephros) in addition to detailed demonstration of pronephros and mesonephros.
https://wn.com/Development_Of_Kidneys(1)_Pronephros_And_Mesonephros_Dr._Ahmed_Farid
First part of development of kidneys and ureters including general ideal about the 3 renal systems (pronephros, mesonephros, and metanephros) in addition to detailed demonstration of pronephros and mesonephros.
- published: 26 Mar 2020
- views: 84782
30:46
3D Kidney Embryology Part 1: Intermediate Mesoderm - Urogenital Ridge - Nephrogenic Cord
- Order: Reorder
- Duration: 30:46
- Uploaded Date: 20 Dec 2022
- views: 42915
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the formation of Urogenital ridge, Genital ridge and Nephrogenic cord. How the ...
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the formation of Urogenital ridge, Genital ridge and Nephrogenic cord. How the primitive kidneys like Pronephros, Mesonephros and Metanephros develop.
With the embryonic folding, along with other components of trilaminar germ layer, the intermediate mesoderm also folds. At the cranial and caudal end of the embryo, there is no intermediate mesoderm.
The intermediate mesoderm and the paraxial mesoderm get separated from the lateral plate mesoderm. Paraxial mesoderm goes on to form the vertebral column and contributes to the muscles and skin formation. While the intermediate mesoderm is now behind the lateral plate mesoderm. Specifically, it is behind the intraembryonic somatic mesoderm near its junction with the intraembryonic splanchnic mesoderm. This intraembryonic somatic mesoderm will form a thin epithelial membrane termed mesothelium and the epithelium is also referred to as “celomic epithelium”.
The intermediate mesoderm proliferates and forms a thick cylindrical structure called the “Nephrogenic cord” (Nephrogenic; means kidney-forming). The nephrogenic cord in its midpart is accompanied by another mesodermal mass (also derived from the intermediate mesoderm). This mesodermal mass, covered with the overlying celomic epithelium, lies slightly ventral and medial to the nephrogenic cord and is the primordium of most of the parts of gonads (testes/ovaries). Hence it is termed as genital ridge. The nephrogenic cord and ridge along with the overlying celomic epithelium form a bulge, termed as “Urogenital ridge”.
In humans, three pairs of kidneys develop in a craniocaudal fashion with increasingly advanced design.
The first pair develops in the cervical region, called Pronephros, and is the most primitive type of kidney.
Pronephros is basically a mesenchymal tissue. Mesenchyme consists of irregularly shaped cells interspersed between a ground substance. In other words, mesenchyme is the embryonic connective tissue.
The mesenchymal cells in pronephros become arranged in pair of blobs or segments called nephro-tome (NOT NephroStome) – as in sclerTome or DermoTome. Cells in the center/core of each blob die or undergo atrophy. While the cell at the periphery acquires a particular shape and establishes cell-to-cell contact. In other words these cells undergo mesenchymal-to-epithelium transition. So, this primitive pronephric nephron consists of epithelial cells lined cavity.
It then assumes a specific shape and forms an s-shaped pronephric tubule. At the anteromedial end of this tubule, a tuft a capillaries from a branch aorta gets pushed into it and forms the renal corpuscle. However, in humans pronephros are non-functional and such glomeruli do not form in human fetuses. The lateral end of the tubule joins with lateral end of the neighboring tubule immediately caudal to it. A series of such connection forms a long duct craniocaudally called pronephric (collecting) duct.
From the last pronephric tubule, the duct grows caudally downwards and along the medial side Intermediate mesoderm and even grows beyond the caudal end of this mesoderm to finally meet with the cloaca.
The pronephric kidney is the most primitive and basic type of kidney. In small fishes, it is functional and definitive kidney. Their bodies aren’t too complex and they live in water. It is very easy to excrete the limited variety of waste products formed in body of such fishes with simple type of kidney. However, humans are much more complex. They ingest and create several different type of toxic substances and have large bodies. Such simple kidneys are simply not enough for humans. So more complex kidneys are needed. The pronephric kidneys in human are non-functional and regress shortly. As the caudal pronephric tubules form, the cranial tubules are gradually lost, along with their adjacent portion of their duct.
As the cranial portions are lost the caudal most portions of pronephros induce the formation of next more advanced pair of kidneys called mesonephros. Mesonephric tubules form in a similar fashion as pronephric tubules. The tubules create urine and collecting duct is involved in transport of urine to urinary bladder and also involved in pulling water thus further concentrating the urine even. So for this primitive function there is no need to re-invent the wheel. Rather than forming its own collecting duct, it uses the distal (and remaining) part of the pronephric (collecting) duct. After mesonephric kidneys assert their ownership over the pronephric duct, now it renamed as mesonephric duct, also called Wolffian duct on the name of scientist who first described it.
Even the mesonephric kidney is not enough to cater the needs of an organism as complex as human. So most of the tubules of mesonephros regress along with their adjacent collecting duct. However, in some smaller animals, mesonephric kidneys are the definitive kidney.
https://wn.com/3D_Kidney_Embryology_Part_1_Intermediate_Mesoderm_Urogenital_Ridge_Nephrogenic_Cord
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the formation of Urogenital ridge, Genital ridge and Nephrogenic cord. How the primitive kidneys like Pronephros, Mesonephros and Metanephros develop.
With the embryonic folding, along with other components of trilaminar germ layer, the intermediate mesoderm also folds. At the cranial and caudal end of the embryo, there is no intermediate mesoderm.
The intermediate mesoderm and the paraxial mesoderm get separated from the lateral plate mesoderm. Paraxial mesoderm goes on to form the vertebral column and contributes to the muscles and skin formation. While the intermediate mesoderm is now behind the lateral plate mesoderm. Specifically, it is behind the intraembryonic somatic mesoderm near its junction with the intraembryonic splanchnic mesoderm. This intraembryonic somatic mesoderm will form a thin epithelial membrane termed mesothelium and the epithelium is also referred to as “celomic epithelium”.
The intermediate mesoderm proliferates and forms a thick cylindrical structure called the “Nephrogenic cord” (Nephrogenic; means kidney-forming). The nephrogenic cord in its midpart is accompanied by another mesodermal mass (also derived from the intermediate mesoderm). This mesodermal mass, covered with the overlying celomic epithelium, lies slightly ventral and medial to the nephrogenic cord and is the primordium of most of the parts of gonads (testes/ovaries). Hence it is termed as genital ridge. The nephrogenic cord and ridge along with the overlying celomic epithelium form a bulge, termed as “Urogenital ridge”.
In humans, three pairs of kidneys develop in a craniocaudal fashion with increasingly advanced design.
The first pair develops in the cervical region, called Pronephros, and is the most primitive type of kidney.
Pronephros is basically a mesenchymal tissue. Mesenchyme consists of irregularly shaped cells interspersed between a ground substance. In other words, mesenchyme is the embryonic connective tissue.
The mesenchymal cells in pronephros become arranged in pair of blobs or segments called nephro-tome (NOT NephroStome) – as in sclerTome or DermoTome. Cells in the center/core of each blob die or undergo atrophy. While the cell at the periphery acquires a particular shape and establishes cell-to-cell contact. In other words these cells undergo mesenchymal-to-epithelium transition. So, this primitive pronephric nephron consists of epithelial cells lined cavity.
It then assumes a specific shape and forms an s-shaped pronephric tubule. At the anteromedial end of this tubule, a tuft a capillaries from a branch aorta gets pushed into it and forms the renal corpuscle. However, in humans pronephros are non-functional and such glomeruli do not form in human fetuses. The lateral end of the tubule joins with lateral end of the neighboring tubule immediately caudal to it. A series of such connection forms a long duct craniocaudally called pronephric (collecting) duct.
From the last pronephric tubule, the duct grows caudally downwards and along the medial side Intermediate mesoderm and even grows beyond the caudal end of this mesoderm to finally meet with the cloaca.
The pronephric kidney is the most primitive and basic type of kidney. In small fishes, it is functional and definitive kidney. Their bodies aren’t too complex and they live in water. It is very easy to excrete the limited variety of waste products formed in body of such fishes with simple type of kidney. However, humans are much more complex. They ingest and create several different type of toxic substances and have large bodies. Such simple kidneys are simply not enough for humans. So more complex kidneys are needed. The pronephric kidneys in human are non-functional and regress shortly. As the caudal pronephric tubules form, the cranial tubules are gradually lost, along with their adjacent portion of their duct.
As the cranial portions are lost the caudal most portions of pronephros induce the formation of next more advanced pair of kidneys called mesonephros. Mesonephric tubules form in a similar fashion as pronephric tubules. The tubules create urine and collecting duct is involved in transport of urine to urinary bladder and also involved in pulling water thus further concentrating the urine even. So for this primitive function there is no need to re-invent the wheel. Rather than forming its own collecting duct, it uses the distal (and remaining) part of the pronephric (collecting) duct. After mesonephric kidneys assert their ownership over the pronephric duct, now it renamed as mesonephric duct, also called Wolffian duct on the name of scientist who first described it.
Even the mesonephric kidney is not enough to cater the needs of an organism as complex as human. So most of the tubules of mesonephros regress along with their adjacent collecting duct. However, in some smaller animals, mesonephric kidneys are the definitive kidney.
- published: 20 Dec 2022
- views: 42915
1:24
Building the Body's Filters: A Look at Kidney Development
- Order: Reorder
- Duration: 1:24
- Uploaded Date: 02 Sep 2018
- views: 27414
Kidney development is a complex and highly regulated process that begins early in embryonic development and continues throughout fetal development. The kidneys ...
Kidney development is a complex and highly regulated process that begins early in embryonic development and continues throughout fetal development. The kidneys are vital organs responsible for filtering waste products and excess substances from the blood, maintaining electrolyte balance, and regulating blood pressure. Understanding kidney development is crucial because any disruptions in this process can lead to congenital kidney abnormalities or other kidney-related disorders.
Here is an overview of the key stages of kidney development:
1. Pronephros (Weeks 4-5 of Embryonic Development): Kidney development starts with the formation of the pronephros, which is a very rudimentary and non-functional set of kidneys. They play a minimal role in waste elimination. However, they are essential for signaling events that guide the development of the more advanced kidneys.
2. Mesonephros (Weeks 5-10 of Embryonic Development): The mesonephros follows the pronephros and represents the next stage in kidney development. While still not the fully functional kidneys we think of, they play a role in filtering waste products and also contribute to the development of the male reproductive system.
3. Metanephros (Weeks 9-36 of Fetal Development): The metanephros is the final stage in kidney development, and it ultimately forms the permanent kidneys. The metanephros consists of two components: the nephrons and the collecting duct system. The nephrons are the functional units of the kidney responsible for filtering blood and producing urine. They are composed of a renal corpuscle (Bowman's capsule and glomerulus) and a renal tubule. The collecting duct system collects urine from the nephrons and transports it to the renal pelvis and ureter for excretion.
4. Ureteric Bud Formation: The development of the metanephros is initiated by an outgrowth called the ureteric bud from the mesonephric duct. This bud penetrates into a mass of tissue known as the metanephric mesenchyme. Interactions between the ureteric bud and the metanephric mesenchyme are crucial for proper kidney development.
5. Nephrogenesis: Nephrogenesis refers to the formation of nephrons, and it involves complex cellular interactions and signaling pathways. The metanephric mesenchyme gives rise to various cell types that differentiate into nephron components, including the glomerulus, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting ducts.
6. Maturation and Vascularization: As kidney development progresses, the nephrons and collecting ducts continue to mature and become more specialized. The kidneys also become vascularized, meaning they develop a network of blood vessels to support their function.
7. Migration and Fusion: The two kidneys, which initially develop as separate structures, migrate to their final positions in the upper abdominal cavity and fuse into a single organ. This fusion is usually complete by the end of the first trimester of pregnancy.
8. Functional Development: The fully developed kidneys are responsible for filtering blood to remove waste products, regulating fluid and electrolyte balance, controlling blood pressure, and producing urine. These functions become critical for maintaining homeostasis in the developing fetus and later in life.
Any disruptions or genetic mutations during kidney development can lead to congenital kidney abnormalities, such as kidney agenesis (absence of one or both kidneys), kidney dysplasia (abnormal kidney development), or other congenital renal disorders. Additionally, understanding the molecular and cellular mechanisms of kidney development is important for potential future advances in regenerative medicine and treatments for kidney diseases.
https://wn.com/Building_The_Body's_Filters_A_Look_At_Kidney_Development
Kidney development is a complex and highly regulated process that begins early in embryonic development and continues throughout fetal development. The kidneys are vital organs responsible for filtering waste products and excess substances from the blood, maintaining electrolyte balance, and regulating blood pressure. Understanding kidney development is crucial because any disruptions in this process can lead to congenital kidney abnormalities or other kidney-related disorders.
Here is an overview of the key stages of kidney development:
1. Pronephros (Weeks 4-5 of Embryonic Development): Kidney development starts with the formation of the pronephros, which is a very rudimentary and non-functional set of kidneys. They play a minimal role in waste elimination. However, they are essential for signaling events that guide the development of the more advanced kidneys.
2. Mesonephros (Weeks 5-10 of Embryonic Development): The mesonephros follows the pronephros and represents the next stage in kidney development. While still not the fully functional kidneys we think of, they play a role in filtering waste products and also contribute to the development of the male reproductive system.
3. Metanephros (Weeks 9-36 of Fetal Development): The metanephros is the final stage in kidney development, and it ultimately forms the permanent kidneys. The metanephros consists of two components: the nephrons and the collecting duct system. The nephrons are the functional units of the kidney responsible for filtering blood and producing urine. They are composed of a renal corpuscle (Bowman's capsule and glomerulus) and a renal tubule. The collecting duct system collects urine from the nephrons and transports it to the renal pelvis and ureter for excretion.
4. Ureteric Bud Formation: The development of the metanephros is initiated by an outgrowth called the ureteric bud from the mesonephric duct. This bud penetrates into a mass of tissue known as the metanephric mesenchyme. Interactions between the ureteric bud and the metanephric mesenchyme are crucial for proper kidney development.
5. Nephrogenesis: Nephrogenesis refers to the formation of nephrons, and it involves complex cellular interactions and signaling pathways. The metanephric mesenchyme gives rise to various cell types that differentiate into nephron components, including the glomerulus, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting ducts.
6. Maturation and Vascularization: As kidney development progresses, the nephrons and collecting ducts continue to mature and become more specialized. The kidneys also become vascularized, meaning they develop a network of blood vessels to support their function.
7. Migration and Fusion: The two kidneys, which initially develop as separate structures, migrate to their final positions in the upper abdominal cavity and fuse into a single organ. This fusion is usually complete by the end of the first trimester of pregnancy.
8. Functional Development: The fully developed kidneys are responsible for filtering blood to remove waste products, regulating fluid and electrolyte balance, controlling blood pressure, and producing urine. These functions become critical for maintaining homeostasis in the developing fetus and later in life.
Any disruptions or genetic mutations during kidney development can lead to congenital kidney abnormalities, such as kidney agenesis (absence of one or both kidneys), kidney dysplasia (abnormal kidney development), or other congenital renal disorders. Additionally, understanding the molecular and cellular mechanisms of kidney development is important for potential future advances in regenerative medicine and treatments for kidney diseases.
- published: 02 Sep 2018
- views: 27414
8:23
kidney development
- Order: Reorder
- Duration: 8:23
- Uploaded Date: 17 Jan 2019
- views: 7721
- published: 17 Jan 2019
- views: 7721
6:30
12 The Development of the Urinary Tract
- Order: Reorder
- Duration: 6:30
- Uploaded Date: 17 Aug 2021
- views: 80951
The development of the urinary tract is a complex process that occurs during embryonic development and is essential for the elimination of waste products from t...
The development of the urinary tract is a complex process that occurs during embryonic development and is essential for the elimination of waste products from the body. The urinary tract includes the kidneys, ureters, bladder, and urethra.
The development of the urinary tract begins during the fourth week of embryonic development, when the pronephros, or the first functional kidney, begins to form. The pronephros is a temporary structure that is replaced by the mesonephros and ultimately the metanephros, which is the final functional kidney.
The metanephros arises from the intermediate mesoderm and begins to form during the fifth week of embryonic development. The metanephric duct, which connects the developing kidney to the bladder, also begins to form at this time.
The development of the urinary tract is regulated by a complex interplay of genetic and environmental factors. For example, the transcription factors Pax2 and Pax8 are known to play critical roles in the development of the metanephros and the formation of the ureteric bud, respectively.
As the urinary tract develops, it becomes intimately connected with the reproductive system, with the urethra serving as a common passage for urine and semen in males. The development of the urinary tract is also closely linked to the development of the cardiovascular system, which is responsible for delivering blood and nutrients to the developing kidneys.
The final stages of urinary tract development occur during the fetal period, when the kidneys begin to produce urine and the bladder begins to fill and empty. The development of the urinary tract is also closely linked to the development of the nervous system, which is responsible for controlling bladder function.
Abnormalities in urinary tract development can lead to a variety of developmental disorders, such as vesicoureteral reflux and renal agenesis. Understanding the mechanisms of urinary tract development is important for developing new treatments for these disorders and for improving our understanding of the process of embryonic development.
In summary, the development of the urinary tract is a complex process that is essential for the elimination of waste products from the body. The urinary tract arises from the intermediate mesoderm and is regulated by a complex interplay of genetic and environmental factors. Abnormalities in urinary tract development can lead to a variety of developmental disorders, highlighting the importance of understanding this process for improving human health.
https://wn.com/12_The_Development_Of_The_Urinary_Tract
The development of the urinary tract is a complex process that occurs during embryonic development and is essential for the elimination of waste products from the body. The urinary tract includes the kidneys, ureters, bladder, and urethra.
The development of the urinary tract begins during the fourth week of embryonic development, when the pronephros, or the first functional kidney, begins to form. The pronephros is a temporary structure that is replaced by the mesonephros and ultimately the metanephros, which is the final functional kidney.
The metanephros arises from the intermediate mesoderm and begins to form during the fifth week of embryonic development. The metanephric duct, which connects the developing kidney to the bladder, also begins to form at this time.
The development of the urinary tract is regulated by a complex interplay of genetic and environmental factors. For example, the transcription factors Pax2 and Pax8 are known to play critical roles in the development of the metanephros and the formation of the ureteric bud, respectively.
As the urinary tract develops, it becomes intimately connected with the reproductive system, with the urethra serving as a common passage for urine and semen in males. The development of the urinary tract is also closely linked to the development of the cardiovascular system, which is responsible for delivering blood and nutrients to the developing kidneys.
The final stages of urinary tract development occur during the fetal period, when the kidneys begin to produce urine and the bladder begins to fill and empty. The development of the urinary tract is also closely linked to the development of the nervous system, which is responsible for controlling bladder function.
Abnormalities in urinary tract development can lead to a variety of developmental disorders, such as vesicoureteral reflux and renal agenesis. Understanding the mechanisms of urinary tract development is important for developing new treatments for these disorders and for improving our understanding of the process of embryonic development.
In summary, the development of the urinary tract is a complex process that is essential for the elimination of waste products from the body. The urinary tract arises from the intermediate mesoderm and is regulated by a complex interplay of genetic and environmental factors. Abnormalities in urinary tract development can lead to a variety of developmental disorders, highlighting the importance of understanding this process for improving human health.
- published: 17 Aug 2021
- views: 80951
8:39
Development of urinary system Part 1| Pronephros and mesonephros | Urogenital system Development
- Order: Reorder
- Duration: 8:39
- Uploaded Date: 10 Dec 2021
- views: 12746
Development of urinary system is explained in easiest way. Development of pronephric and mesonephric kidneys. Development of pronephros and mesonephros. Urogeni...
Development of urinary system is explained in easiest way. Development of pronephric and mesonephric kidneys. Development of pronephros and mesonephros. Urogenital system Embryology. Urinary system Embryology
https://wn.com/Development_Of_Urinary_System_Part_1|_Pronephros_And_Mesonephros_|_Urogenital_System_Development
Development of urinary system is explained in easiest way. Development of pronephric and mesonephric kidneys. Development of pronephros and mesonephros. Urogenital system Embryology. Urinary system Embryology
- published: 10 Dec 2021
- views: 12746
7:31
Urogenital System 3 Development of the kidney mesonephros
- Order: Reorder
- Duration: 7:31
- Uploaded Date: 31 Oct 2015
- views: 30579
- published: 31 Oct 2015
- views: 30579
18:58
Vertebrate Kidney Variation | Pronephros,Mesonephros And Metanephros Kidney | BS Zoology | BSc, MSc
- Order: Reorder
- Duration: 18:58
- Uploaded Date: 10 Jul 2021
- views: 12603
#VertebrateKidneyVariation
#evolutionofvertebratekidney
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........................................................................
https://wn.com/Vertebrate_Kidney_Variation_|_Pronephros,Mesonephros_And_Metanephros_Kidney_|_Bs_Zoology_|_Bsc,_Msc
#VertebrateKidneyVariation
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#OpisthonephricKidneyBSZoology
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#metanephrosmesonephrosmetanephric kidney
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#opisthonephrickidney
#archinephrickidney
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#mesosnephrickidney stonespronephric
#developmentofmetanephros
#typesofkidney
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#kidneydevelopmentstages
#succesionofkidney
#vertebrateskidneyfunction
#evolutionofkidney
#vertebratekyaha
#classificationofvertebrate
#vertebratekalakshan
#vertebrateglands
#vertebrateinhindi
#vertebratezoology
#comparativeanatomyofkidney
#generalcharacterandclassificationofvertebrate
#archionephrickidney
#vertebratediversity
#hormonesofvertebbrates
........................................................................
- published: 10 Jul 2021
- views: 12603
10:05
Mesonephros.
- Order: Reorder
- Duration: 10:05
- Uploaded Date: 06 Dec 2020
- views: 221
- published: 06 Dec 2020
- views: 221
5:31
Development of the Kidneys | Renal Embryology | Development of the Urinary System | Embryology
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesoneph...
published: 08 Jan 2021
Development of the Kidneys | Renal Embryology | Development of the Urinary System | Embryology
Development of the Kidneys | Renal Embryology | Development of the Urinary System | Embryology
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- published: 08 Jan 2021
- views: 189767
✨In this video I talk about the stages of development of the kidneys (Pronephros, Mesonephros and Metanephros). I hope it helps! ☀️
🌟What's in this video?
0:00 - Intro
0:12 - Anatomy
0:49 - Stages of Renal Development
1:30 - Pronephros
1:57 - Mesonephros
2:42 - Metanephros
✨ Other videos you may need :
🔅 Development of the Respiratory System: https://youtu.be/_nvdIKdPB3o
💫 For more videos like this, subscribe to my channel!
Byte Size Med: https://youtube.com/channel/UCZghvlgylH3r_CWfA18eFRg
📚Factual References & for Further Reading:
- Langman’s Medical Embryology
- The Developing Human, Clinically Oriented Embryology
- Openstax Anatomy and Physiology
https://openstax.org/details/books/anatomy-and-physiology
- Openstax Biology
https://openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.
33:48
Development of Kidneys(1)-Pronephros and Mesonephros - Dr. Ahmed Farid
First part of development of kidneys and ureters including general ideal about the 3 renal...
published: 26 Mar 2020
Development of Kidneys(1)-Pronephros and Mesonephros - Dr. Ahmed Farid
Development of Kidneys(1)-Pronephros and Mesonephros - Dr. Ahmed Farid
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- published: 26 Mar 2020
- views: 84782
First part of development of kidneys and ureters including general ideal about the 3 renal systems (pronephros, mesonephros, and metanephros) in addition to detailed demonstration of pronephros and mesonephros.
30:46
3D Kidney Embryology Part 1: Intermediate Mesoderm - Urogenital Ridge - Nephrogenic Cord
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the forma...
published: 20 Dec 2022
3D Kidney Embryology Part 1: Intermediate Mesoderm - Urogenital Ridge - Nephrogenic Cord
3D Kidney Embryology Part 1: Intermediate Mesoderm - Urogenital Ridge - Nephrogenic Cord
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- published: 20 Dec 2022
- views: 42915
In this 3D visual lecture of Embryology, Dr. Aizaz from MedicoVisual talks about the formation of Urogenital ridge, Genital ridge and Nephrogenic cord. How the primitive kidneys like Pronephros, Mesonephros and Metanephros develop.
With the embryonic folding, along with other components of trilaminar germ layer, the intermediate mesoderm also folds. At the cranial and caudal end of the embryo, there is no intermediate mesoderm.
The intermediate mesoderm and the paraxial mesoderm get separated from the lateral plate mesoderm. Paraxial mesoderm goes on to form the vertebral column and contributes to the muscles and skin formation. While the intermediate mesoderm is now behind the lateral plate mesoderm. Specifically, it is behind the intraembryonic somatic mesoderm near its junction with the intraembryonic splanchnic mesoderm. This intraembryonic somatic mesoderm will form a thin epithelial membrane termed mesothelium and the epithelium is also referred to as “celomic epithelium”.
The intermediate mesoderm proliferates and forms a thick cylindrical structure called the “Nephrogenic cord” (Nephrogenic; means kidney-forming). The nephrogenic cord in its midpart is accompanied by another mesodermal mass (also derived from the intermediate mesoderm). This mesodermal mass, covered with the overlying celomic epithelium, lies slightly ventral and medial to the nephrogenic cord and is the primordium of most of the parts of gonads (testes/ovaries). Hence it is termed as genital ridge. The nephrogenic cord and ridge along with the overlying celomic epithelium form a bulge, termed as “Urogenital ridge”.
In humans, three pairs of kidneys develop in a craniocaudal fashion with increasingly advanced design.
The first pair develops in the cervical region, called Pronephros, and is the most primitive type of kidney.
Pronephros is basically a mesenchymal tissue. Mesenchyme consists of irregularly shaped cells interspersed between a ground substance. In other words, mesenchyme is the embryonic connective tissue.
The mesenchymal cells in pronephros become arranged in pair of blobs or segments called nephro-tome (NOT NephroStome) – as in sclerTome or DermoTome. Cells in the center/core of each blob die or undergo atrophy. While the cell at the periphery acquires a particular shape and establishes cell-to-cell contact. In other words these cells undergo mesenchymal-to-epithelium transition. So, this primitive pronephric nephron consists of epithelial cells lined cavity.
It then assumes a specific shape and forms an s-shaped pronephric tubule. At the anteromedial end of this tubule, a tuft a capillaries from a branch aorta gets pushed into it and forms the renal corpuscle. However, in humans pronephros are non-functional and such glomeruli do not form in human fetuses. The lateral end of the tubule joins with lateral end of the neighboring tubule immediately caudal to it. A series of such connection forms a long duct craniocaudally called pronephric (collecting) duct.
From the last pronephric tubule, the duct grows caudally downwards and along the medial side Intermediate mesoderm and even grows beyond the caudal end of this mesoderm to finally meet with the cloaca.
The pronephric kidney is the most primitive and basic type of kidney. In small fishes, it is functional and definitive kidney. Their bodies aren’t too complex and they live in water. It is very easy to excrete the limited variety of waste products formed in body of such fishes with simple type of kidney. However, humans are much more complex. They ingest and create several different type of toxic substances and have large bodies. Such simple kidneys are simply not enough for humans. So more complex kidneys are needed. The pronephric kidneys in human are non-functional and regress shortly. As the caudal pronephric tubules form, the cranial tubules are gradually lost, along with their adjacent portion of their duct.
As the cranial portions are lost the caudal most portions of pronephros induce the formation of next more advanced pair of kidneys called mesonephros. Mesonephric tubules form in a similar fashion as pronephric tubules. The tubules create urine and collecting duct is involved in transport of urine to urinary bladder and also involved in pulling water thus further concentrating the urine even. So for this primitive function there is no need to re-invent the wheel. Rather than forming its own collecting duct, it uses the distal (and remaining) part of the pronephric (collecting) duct. After mesonephric kidneys assert their ownership over the pronephric duct, now it renamed as mesonephric duct, also called Wolffian duct on the name of scientist who first described it.
Even the mesonephric kidney is not enough to cater the needs of an organism as complex as human. So most of the tubules of mesonephros regress along with their adjacent collecting duct. However, in some smaller animals, mesonephric kidneys are the definitive kidney.
1:24
Building the Body's Filters: A Look at Kidney Development
Kidney development is a complex and highly regulated process that begins early in embryoni...
published: 02 Sep 2018
Building the Body's Filters: A Look at Kidney Development
Building the Body's Filters: A Look at Kidney Development
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- published: 02 Sep 2018
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Kidney development is a complex and highly regulated process that begins early in embryonic development and continues throughout fetal development. The kidneys are vital organs responsible for filtering waste products and excess substances from the blood, maintaining electrolyte balance, and regulating blood pressure. Understanding kidney development is crucial because any disruptions in this process can lead to congenital kidney abnormalities or other kidney-related disorders.
Here is an overview of the key stages of kidney development:
1. Pronephros (Weeks 4-5 of Embryonic Development): Kidney development starts with the formation of the pronephros, which is a very rudimentary and non-functional set of kidneys. They play a minimal role in waste elimination. However, they are essential for signaling events that guide the development of the more advanced kidneys.
2. Mesonephros (Weeks 5-10 of Embryonic Development): The mesonephros follows the pronephros and represents the next stage in kidney development. While still not the fully functional kidneys we think of, they play a role in filtering waste products and also contribute to the development of the male reproductive system.
3. Metanephros (Weeks 9-36 of Fetal Development): The metanephros is the final stage in kidney development, and it ultimately forms the permanent kidneys. The metanephros consists of two components: the nephrons and the collecting duct system. The nephrons are the functional units of the kidney responsible for filtering blood and producing urine. They are composed of a renal corpuscle (Bowman's capsule and glomerulus) and a renal tubule. The collecting duct system collects urine from the nephrons and transports it to the renal pelvis and ureter for excretion.
4. Ureteric Bud Formation: The development of the metanephros is initiated by an outgrowth called the ureteric bud from the mesonephric duct. This bud penetrates into a mass of tissue known as the metanephric mesenchyme. Interactions between the ureteric bud and the metanephric mesenchyme are crucial for proper kidney development.
5. Nephrogenesis: Nephrogenesis refers to the formation of nephrons, and it involves complex cellular interactions and signaling pathways. The metanephric mesenchyme gives rise to various cell types that differentiate into nephron components, including the glomerulus, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting ducts.
6. Maturation and Vascularization: As kidney development progresses, the nephrons and collecting ducts continue to mature and become more specialized. The kidneys also become vascularized, meaning they develop a network of blood vessels to support their function.
7. Migration and Fusion: The two kidneys, which initially develop as separate structures, migrate to their final positions in the upper abdominal cavity and fuse into a single organ. This fusion is usually complete by the end of the first trimester of pregnancy.
8. Functional Development: The fully developed kidneys are responsible for filtering blood to remove waste products, regulating fluid and electrolyte balance, controlling blood pressure, and producing urine. These functions become critical for maintaining homeostasis in the developing fetus and later in life.
Any disruptions or genetic mutations during kidney development can lead to congenital kidney abnormalities, such as kidney agenesis (absence of one or both kidneys), kidney dysplasia (abnormal kidney development), or other congenital renal disorders. Additionally, understanding the molecular and cellular mechanisms of kidney development is important for potential future advances in regenerative medicine and treatments for kidney diseases.
6:30
12 The Development of the Urinary Tract
The development of the urinary tract is a complex process that occurs during embryonic dev...
published: 17 Aug 2021
12 The Development of the Urinary Tract
12 The Development of the Urinary Tract
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- published: 17 Aug 2021
- views: 80951
The development of the urinary tract is a complex process that occurs during embryonic development and is essential for the elimination of waste products from the body. The urinary tract includes the kidneys, ureters, bladder, and urethra.
The development of the urinary tract begins during the fourth week of embryonic development, when the pronephros, or the first functional kidney, begins to form. The pronephros is a temporary structure that is replaced by the mesonephros and ultimately the metanephros, which is the final functional kidney.
The metanephros arises from the intermediate mesoderm and begins to form during the fifth week of embryonic development. The metanephric duct, which connects the developing kidney to the bladder, also begins to form at this time.
The development of the urinary tract is regulated by a complex interplay of genetic and environmental factors. For example, the transcription factors Pax2 and Pax8 are known to play critical roles in the development of the metanephros and the formation of the ureteric bud, respectively.
As the urinary tract develops, it becomes intimately connected with the reproductive system, with the urethra serving as a common passage for urine and semen in males. The development of the urinary tract is also closely linked to the development of the cardiovascular system, which is responsible for delivering blood and nutrients to the developing kidneys.
The final stages of urinary tract development occur during the fetal period, when the kidneys begin to produce urine and the bladder begins to fill and empty. The development of the urinary tract is also closely linked to the development of the nervous system, which is responsible for controlling bladder function.
Abnormalities in urinary tract development can lead to a variety of developmental disorders, such as vesicoureteral reflux and renal agenesis. Understanding the mechanisms of urinary tract development is important for developing new treatments for these disorders and for improving our understanding of the process of embryonic development.
In summary, the development of the urinary tract is a complex process that is essential for the elimination of waste products from the body. The urinary tract arises from the intermediate mesoderm and is regulated by a complex interplay of genetic and environmental factors. Abnormalities in urinary tract development can lead to a variety of developmental disorders, highlighting the importance of understanding this process for improving human health.
8:39
Development of urinary system Part 1| Pronephros and mesonephros | Urogenital system Development
Development of urinary system is explained in easiest way. Development of pronephric and m...
published: 10 Dec 2021
Development of urinary system Part 1| Pronephros and mesonephros | Urogenital system Development
Development of urinary system Part 1| Pronephros and mesonephros | Urogenital system Development
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- published: 10 Dec 2021
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Development of urinary system is explained in easiest way. Development of pronephric and mesonephric kidneys. Development of pronephros and mesonephros. Urogenital system Embryology. Urinary system Embryology
7:31
Urogenital System 3 Development of the kidney mesonephros
published: 31 Oct 2015
Urogenital System 3 Development of the kidney mesonephros
Urogenital System 3 Development of the kidney mesonephros
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- published: 31 Oct 2015
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18:58
Vertebrate Kidney Variation | Pronephros,Mesonephros And Metanephros Kidney | BS Zoology | BSc, MSc
#VertebrateKidneyVariation
#evolutionofvertebratekidney
#evolutionofkidneyinvertebrates
#e...
published: 10 Jul 2021
Vertebrate Kidney Variation | Pronephros,Mesonephros And Metanephros Kidney | BS Zoology | BSc, MSc
Vertebrate Kidney Variation | Pronephros,Mesonephros And Metanephros Kidney | BS Zoology | BSc, MSc
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- published: 10 Jul 2021
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#VertebrateKidneyVariation
#evolutionofvertebratekidney
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#opisthonephrickidney
#archinephrickidney
#kidneydevelopment
#mesosnephrickidney stonespronephric
#developmentofmetanephros
#typesofkidney
#permanentkidney
#kidneydevelopmentstages
#succesionofkidney
#vertebrateskidneyfunction
#evolutionofkidney
#vertebratekyaha
#classificationofvertebrate
#vertebratekalakshan
#vertebrateglands
#vertebrateinhindi
#vertebratezoology
#comparativeanatomyofkidney
#generalcharacterandclassificationofvertebrate
#archionephrickidney
#vertebratediversity
#hormonesofvertebbrates
........................................................................
Mesonephros
The mesonephros (Greek: middle kidney) is one of three excretory organs that develop in vertebrates. It serves as the main excretory organ of aquatic vertebrates and as a temporary kidney in reptiles, birds, and mammals. The mesonephros is included in the Wolffian body after Caspar Friedrich Wolff who described it in 1759. (The Wolffian body is composed of : mesonephros + paramesonephrotic blastema)
Structure
The mesonephros acts as a structure similar to the kidney that, in humans, functions between the sixth and tenth weeks of embryological life. Despite the similarity in structure, function, and terminology, however, the mesonephric nephrons do not form any part of the mature kidney or nephrons.
In humans, the mesonephros consists of units which are similar in structure and function to nephrons of the adult kidney. Each of these consists of a glomerulus, a tuft of capillaries which arises from lateral branches of dorsal aorta and drains into the inferior cardinal vein; a Bowman's capsule, a funnel like structure which surrounds the glomerulus; and a mesonephric tubule, a tube which connects the Bowman's capsule to the mesonephric duct. A unit consisting of a single glomerulus and the Bowman's capsule surrounding it is called renal corpuscle, and a unit consisting of single renal corpuscle with its associated mesonephric tubule is called a "nephron" or "excretory mesonephric unit".
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Mesonephros
Development of the Kidneys | Renal Embryology | De...
Development of Kidneys(1)-Pronephros and Mesonephr...
3D Kidney Embryology Part 1: Intermediate Mesoderm...
Building the Body's Filters: A Look at Kidney Deve...
kidney development...
12 The Development of the Urinary Tract...
Development of urinary system Part 1| Pronephros a...
Urogenital System 3 Development of the kidney mes...
Vertebrate Kidney Variation | Pronephros,Mesonephr...