-
Long Bone Anatomy - Drawn & Defined
The structure of a typical long bone - drawn, defined and discussed!
The Human Body is a complex, amazing biological machine.
'Human Biology Explained' is a YouTube video series that uses simple drawings to illustrate, and help you develop an understanding of, key anatomy and physiology concepts.
Human Biology Explained is on:
- Google+ - http://bit.ly/1diSfNh
- Twitter - @humanbiology1
Dr Mario Ricci
The School of Medical Sciences, The University of Adelaide
http://www.adelaide.edu.au
Apple Distinguished Educator
Made on iPad and Mac.
published: 24 Jul 2014
-
Anatomy of a Long Bone
🩻 Support the channel - https://www.patreon.com/siebertscience
🧠 For all my science videos and resources: http://www.justinmsiebert.com/science
💻 My youtube channel: www.youtube.com/siebertscience
This video explains the anatomy of a long bone and the functions of each part.
0:00 Intro
0:42 Diaphysis and Epiphyses
1:33 Articular Cartilage
2:14 Red Bone Marrow
3:03 Epiphyseal Plates
4:06 Yellow Bone Marrow
5:25 Spongy and Compact Bone
6:42 Arteries
7:01 Periosteum and Endosteum
8:01 Recap
8:51 Blank Diagram
9:28 Endscreen
www.youtube.com/siebertscience
www.justinmsiebert.com
——————
Music:
“Up!” from Storyblocks Audio (free)
Images:
“603 Anatomy of Long Bone” OpenStax College, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons, https://commons.wikimedia.org...
published: 18 Jan 2021
-
Structures of a Long Bone
Learn the anatomical structures of a long bone as seen on this human femur
published: 01 Dec 2013
-
Parts Of A Long Bone - Structure Of A Long Bone
In this video we discuss the parts of a long bone and some of the functions of each of those bone parts. We cover the diaphysis, the epiphysis, spongy and compact bone, bone marrow, the periosteum and the medullary cavity.
Transcript/notes
Parts of a long bone.
In this video we are going to go over a very basic overview of the parts of a long bone.
The diaphysis is the shaft of a bone, and its function is to be rigid enough to tolerate strong forces and not bend or break. The diaphysis is comprised of compact bone tissue and spongy bone tissue.
At each end of the diaphysis is a epiphysis, which is composed mainly of spongy bone tissue. The spaces of spongy bone tissue contain red marrow, which produces red blood cells, white blood cells and platelets. You can see at the epiphy...
published: 29 Mar 2018
-
Long Bone Anatomy
In this lecture we take a look at what makes up a long bone in the body.
published: 03 Mar 2017
-
Structure of Long Bones
Donate here: http://www.aklectures.com/donate.php
Website video: http://www.aklectures.com/lecture/structure-of-long-bones
Facebook link: https://www.facebook.com/aklectures
Website link: http://www.aklectures.com
published: 01 Oct 2014
-
Parts of long bones
Learning about the human body has never been more interactive! Our visual tools take human anatomy to a whole new level.
ANATOMYKA app is available now:
APP STORE
https://itunes.apple.com/app/anatomyka/id1435038724
GOOGLE PLAY
https://play.google.com/store/apps/details?id=com.anatomyka.android
This is our first educational video and was created with the Anatomyka app using our unique, cutting-edge 3D human model. All videos include professional voiceover with correct English term pronunciation.
Find more details and descriptions in our Anatomyka app – coming soon!
More here: https://www.anatomyka.com/
=============================
This is an anatomy video tutorial describing all parts of long bones:
1. Epiphysis
2. Metaphysis
3. Apophysis
4. Diaphysis
=============================
...
published: 28 Mar 2018
-
Bone Anatomy and Physiology in Hindi | Bone cells | compositions | Types | Structure | Functions
Hello Friends
Welcome to Rj Medical Education
In this video
I explained about :-
#bone #anatomy & #physiology
#boneanatomy
#bonephysiology
#hindi
#bone #structure
#bone cells
#typesofbones
#parts of #bones
#functions of #bones
If you have any queries regarding this video,
Please drop your comment in comment box,
I would love to answer.
If you like the video,
Please like, share and subscribe channel.
Thank you.
#rjmedicaleducation
#coachingfreeindia
#rajneetmedicaleducation
published: 04 Jun 2020
-
Blood supply and Nerve supply of Long bone - General Anatomy animations
📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Blood supply and Nerve supply of Long bone - General Anatomy animations
Blood is supplied to mature compact bone through the Haversian canal. Haversian canals are formed when individual lamellae form concentric rings around larger longitudinal canals (approx. 50 µm in diameter) within the bone tissue. Haversian canals typically run parallel to the surface and along the long axis of the bone. The canals and the surrounding lamellae (8–15) are called a Haversian system or an osteon. A Haversian canal generally contains one or two capillaries and nerve fibers. The Haversian canals also surround nerve ...
published: 29 Aug 2021
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Bony Tissue | Anatomy of a Long Bone
In this video, Dr Mike discusses the cells, gels (ground substance), fibres, and minerals within bony tissue. He also looks at the anatomy of a long bone and discusses the importance of each part.
published: 25 Mar 2019
3:24
Long Bone Anatomy - Drawn & Defined
The structure of a typical long bone - drawn, defined and discussed!
The Human Body is a complex, amazing biological machine.
'Human Biology Explained' is a Y...
The structure of a typical long bone - drawn, defined and discussed!
The Human Body is a complex, amazing biological machine.
'Human Biology Explained' is a YouTube video series that uses simple drawings to illustrate, and help you develop an understanding of, key anatomy and physiology concepts.
Human Biology Explained is on:
- Google+ - http://bit.ly/1diSfNh
- Twitter - @humanbiology1
Dr Mario Ricci
The School of Medical Sciences, The University of Adelaide
http://www.adelaide.edu.au
Apple Distinguished Educator
Made on iPad and Mac.
https://wn.com/Long_Bone_Anatomy_Drawn_Defined
The structure of a typical long bone - drawn, defined and discussed!
The Human Body is a complex, amazing biological machine.
'Human Biology Explained' is a YouTube video series that uses simple drawings to illustrate, and help you develop an understanding of, key anatomy and physiology concepts.
Human Biology Explained is on:
- Google+ - http://bit.ly/1diSfNh
- Twitter - @humanbiology1
Dr Mario Ricci
The School of Medical Sciences, The University of Adelaide
http://www.adelaide.edu.au
Apple Distinguished Educator
Made on iPad and Mac.
- published: 24 Jul 2014
- views: 380217
9:49
Anatomy of a Long Bone
🩻 Support the channel - https://www.patreon.com/siebertscience
🧠 For all my science videos and resources: http://www.justinmsiebert.com/science
💻 My youtube ch...
🩻 Support the channel - https://www.patreon.com/siebertscience
🧠 For all my science videos and resources: http://www.justinmsiebert.com/science
💻 My youtube channel: www.youtube.com/siebertscience
This video explains the anatomy of a long bone and the functions of each part.
0:00 Intro
0:42 Diaphysis and Epiphyses
1:33 Articular Cartilage
2:14 Red Bone Marrow
3:03 Epiphyseal Plates
4:06 Yellow Bone Marrow
5:25 Spongy and Compact Bone
6:42 Arteries
7:01 Periosteum and Endosteum
8:01 Recap
8:51 Blank Diagram
9:28 Endscreen
www.youtube.com/siebertscience
www.justinmsiebert.com
——————
Music:
“Up!” from Storyblocks Audio (free)
Images:
“603 Anatomy of Long Bone” OpenStax College, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons, https://commons.wikimedia.org/wiki/File:603_Anatomy_of_Long_Bone.jpg
“Tib fib growth plates” Gilo1969 at English Wikipedia, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons, https://upload.wikimedia.org/wikipedia/commons/7/7a/Tib_fib_growth_plates.jpg
https://wn.com/Anatomy_Of_A_Long_Bone
🩻 Support the channel - https://www.patreon.com/siebertscience
🧠 For all my science videos and resources: http://www.justinmsiebert.com/science
💻 My youtube channel: www.youtube.com/siebertscience
This video explains the anatomy of a long bone and the functions of each part.
0:00 Intro
0:42 Diaphysis and Epiphyses
1:33 Articular Cartilage
2:14 Red Bone Marrow
3:03 Epiphyseal Plates
4:06 Yellow Bone Marrow
5:25 Spongy and Compact Bone
6:42 Arteries
7:01 Periosteum and Endosteum
8:01 Recap
8:51 Blank Diagram
9:28 Endscreen
www.youtube.com/siebertscience
www.justinmsiebert.com
——————
Music:
“Up!” from Storyblocks Audio (free)
Images:
“603 Anatomy of Long Bone” OpenStax College, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons, https://commons.wikimedia.org/wiki/File:603_Anatomy_of_Long_Bone.jpg
“Tib fib growth plates” Gilo1969 at English Wikipedia, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons, https://upload.wikimedia.org/wikipedia/commons/7/7a/Tib_fib_growth_plates.jpg
- published: 18 Jan 2021
- views: 121651
1:39
Structures of a Long Bone
Learn the anatomical structures of a long bone as seen on this human femur
Learn the anatomical structures of a long bone as seen on this human femur
https://wn.com/Structures_Of_A_Long_Bone
Learn the anatomical structures of a long bone as seen on this human femur
- published: 01 Dec 2013
- views: 12830
1:52
Parts Of A Long Bone - Structure Of A Long Bone
In this video we discuss the parts of a long bone and some of the functions of each of those bone parts. We cover the diaphysis, the epiphysis, spongy and comp...
In this video we discuss the parts of a long bone and some of the functions of each of those bone parts. We cover the diaphysis, the epiphysis, spongy and compact bone, bone marrow, the periosteum and the medullary cavity.
Transcript/notes
Parts of a long bone.
In this video we are going to go over a very basic overview of the parts of a long bone.
The diaphysis is the shaft of a bone, and its function is to be rigid enough to tolerate strong forces and not bend or break. The diaphysis is comprised of compact bone tissue and spongy bone tissue.
At each end of the diaphysis is a epiphysis, which is composed mainly of spongy bone tissue. The spaces of spongy bone tissue contain red marrow, which produces red blood cells, white blood cells and platelets. You can see at the epiphysis the bone widens out, this is so a joint can be formed with another bone. By the widening out of these bone ends, a larger surface area is created, providing for better joint stability.
Where bones come together to form joints is a smooth tissue called articular cartilage. It provide shock absorption, cushioning and minimizes friction as the bones move. Because articular cartilage has a poor blood supply, it does not heal very well once it has been damaged.
There is a thin fibrous membrane called periosteum that covers the entire bone surface except where the articular cartilage is. This membrane allows for attachment of ligaments and muscle tendons, and houses cells that are important in bone formation and repairing bone tissue. The periosteum has many nerve fibers, so it can be very painful when bruised.
Inside the diaphysis is a tubelike area called the medullary cavity, which houses red marrow during childhood, which is replaced by yellow marrow as a person ages.
There is a thin membrane that lines the medullary cavity called the endosteum, which contains cells that are important in bone growth and repair.
Bones are also well supplied with arteries and veins.
Timestamps
0:00 The diaphysis
0:17 The epiphysis
0:41 Articular cartilage
0:56 Periosteum
1:17 Medullary cavity
1:28 The endosteum
https://wn.com/Parts_Of_A_Long_Bone_Structure_Of_A_Long_Bone
In this video we discuss the parts of a long bone and some of the functions of each of those bone parts. We cover the diaphysis, the epiphysis, spongy and compact bone, bone marrow, the periosteum and the medullary cavity.
Transcript/notes
Parts of a long bone.
In this video we are going to go over a very basic overview of the parts of a long bone.
The diaphysis is the shaft of a bone, and its function is to be rigid enough to tolerate strong forces and not bend or break. The diaphysis is comprised of compact bone tissue and spongy bone tissue.
At each end of the diaphysis is a epiphysis, which is composed mainly of spongy bone tissue. The spaces of spongy bone tissue contain red marrow, which produces red blood cells, white blood cells and platelets. You can see at the epiphysis the bone widens out, this is so a joint can be formed with another bone. By the widening out of these bone ends, a larger surface area is created, providing for better joint stability.
Where bones come together to form joints is a smooth tissue called articular cartilage. It provide shock absorption, cushioning and minimizes friction as the bones move. Because articular cartilage has a poor blood supply, it does not heal very well once it has been damaged.
There is a thin fibrous membrane called periosteum that covers the entire bone surface except where the articular cartilage is. This membrane allows for attachment of ligaments and muscle tendons, and houses cells that are important in bone formation and repairing bone tissue. The periosteum has many nerve fibers, so it can be very painful when bruised.
Inside the diaphysis is a tubelike area called the medullary cavity, which houses red marrow during childhood, which is replaced by yellow marrow as a person ages.
There is a thin membrane that lines the medullary cavity called the endosteum, which contains cells that are important in bone growth and repair.
Bones are also well supplied with arteries and veins.
Timestamps
0:00 The diaphysis
0:17 The epiphysis
0:41 Articular cartilage
0:56 Periosteum
1:17 Medullary cavity
1:28 The endosteum
- published: 29 Mar 2018
- views: 248562
7:55
Long Bone Anatomy
In this lecture we take a look at what makes up a long bone in the body.
In this lecture we take a look at what makes up a long bone in the body.
https://wn.com/Long_Bone_Anatomy
In this lecture we take a look at what makes up a long bone in the body.
- published: 03 Mar 2017
- views: 16165
6:29
Structure of Long Bones
Donate here: http://www.aklectures.com/donate.php
Website video: http://www.aklectures.com/lecture/structure-of-long-bones
Facebook link: https://www.facebook.c...
Donate here: http://www.aklectures.com/donate.php
Website video: http://www.aklectures.com/lecture/structure-of-long-bones
Facebook link: https://www.facebook.com/aklectures
Website link: http://www.aklectures.com
https://wn.com/Structure_Of_Long_Bones
Donate here: http://www.aklectures.com/donate.php
Website video: http://www.aklectures.com/lecture/structure-of-long-bones
Facebook link: https://www.facebook.com/aklectures
Website link: http://www.aklectures.com
- published: 01 Oct 2014
- views: 73085
1:04
Parts of long bones
Learning about the human body has never been more interactive! Our visual tools take human anatomy to a whole new level.
ANATOMYKA app is available now:
APP S...
Learning about the human body has never been more interactive! Our visual tools take human anatomy to a whole new level.
ANATOMYKA app is available now:
APP STORE
https://itunes.apple.com/app/anatomyka/id1435038724
GOOGLE PLAY
https://play.google.com/store/apps/details?id=com.anatomyka.android
This is our first educational video and was created with the Anatomyka app using our unique, cutting-edge 3D human model. All videos include professional voiceover with correct English term pronunciation.
Find more details and descriptions in our Anatomyka app – coming soon!
More here: https://www.anatomyka.com/
=============================
This is an anatomy video tutorial describing all parts of long bones:
1. Epiphysis
2. Metaphysis
3. Apophysis
4. Diaphysis
=============================
Medical supervision MEMORIX ANATOMY
https://memorixanatomy.com/en/
Subscribe to our YouTube channel: https://www.youtube.com/c/Anatomyka
Like us on Facebook: https://www.facebook.com/Anatomyka/
Follow us on Twitter: https://twitter.com/AnatomykaNews/
Follow us on Instagram: https://www.instagram.com/anatomyka_medicine/
https://wn.com/Parts_Of_Long_Bones
Learning about the human body has never been more interactive! Our visual tools take human anatomy to a whole new level.
ANATOMYKA app is available now:
APP STORE
https://itunes.apple.com/app/anatomyka/id1435038724
GOOGLE PLAY
https://play.google.com/store/apps/details?id=com.anatomyka.android
This is our first educational video and was created with the Anatomyka app using our unique, cutting-edge 3D human model. All videos include professional voiceover with correct English term pronunciation.
Find more details and descriptions in our Anatomyka app – coming soon!
More here: https://www.anatomyka.com/
=============================
This is an anatomy video tutorial describing all parts of long bones:
1. Epiphysis
2. Metaphysis
3. Apophysis
4. Diaphysis
=============================
Medical supervision MEMORIX ANATOMY
https://memorixanatomy.com/en/
Subscribe to our YouTube channel: https://www.youtube.com/c/Anatomyka
Like us on Facebook: https://www.facebook.com/Anatomyka/
Follow us on Twitter: https://twitter.com/AnatomykaNews/
Follow us on Instagram: https://www.instagram.com/anatomyka_medicine/
- published: 28 Mar 2018
- views: 15287
21:02
Bone Anatomy and Physiology in Hindi | Bone cells | compositions | Types | Structure | Functions
Hello Friends
Welcome to Rj Medical Education
In this video
I explained about :-
#bone #anatomy & #physiology
#boneanatomy
#bonephysiology
#hindi
#bone #struc...
Hello Friends
Welcome to Rj Medical Education
In this video
I explained about :-
#bone #anatomy & #physiology
#boneanatomy
#bonephysiology
#hindi
#bone #structure
#bone cells
#typesofbones
#parts of #bones
#functions of #bones
If you have any queries regarding this video,
Please drop your comment in comment box,
I would love to answer.
If you like the video,
Please like, share and subscribe channel.
Thank you.
#rjmedicaleducation
#coachingfreeindia
#rajneetmedicaleducation
https://wn.com/Bone_Anatomy_And_Physiology_In_Hindi_|_Bone_Cells_|_Compositions_|_Types_|_Structure_|_Functions
Hello Friends
Welcome to Rj Medical Education
In this video
I explained about :-
#bone #anatomy & #physiology
#boneanatomy
#bonephysiology
#hindi
#bone #structure
#bone cells
#typesofbones
#parts of #bones
#functions of #bones
If you have any queries regarding this video,
Please drop your comment in comment box,
I would love to answer.
If you like the video,
Please like, share and subscribe channel.
Thank you.
#rjmedicaleducation
#coachingfreeindia
#rajneetmedicaleducation
- published: 04 Jun 2020
- views: 972559
4:53
Blood supply and Nerve supply of Long bone - General Anatomy animations
📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- h...
📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Blood supply and Nerve supply of Long bone - General Anatomy animations
Blood is supplied to mature compact bone through the Haversian canal. Haversian canals are formed when individual lamellae form concentric rings around larger longitudinal canals (approx. 50 µm in diameter) within the bone tissue. Haversian canals typically run parallel to the surface and along the long axis of the bone. The canals and the surrounding lamellae (8–15) are called a Haversian system or an osteon. A Haversian canal generally contains one or two capillaries and nerve fibers. The Haversian canals also surround nerve cells throughout the bone and communicate with osteocytes in lacunae (spaces within the dense bone matrix that contain the living bone cells) through canaliculi. This unique arrangement is conducive to the storage of mineral salt deposits that give bone tissue its strength.
The vascular supply of long bones depends on several points of inflow, which feed complex sinusoidal networks within the bone. These in turn drain to various channels through all surfaces of the bone except that covered by articular cartilage.
Volkmann’s canals are channels that assist with blood and nerve supply from the periosteum to the Haversian canal. One or two main diaphyseal nutrient arteries enter the shaft obliquely through one or two nutrient foramina leading to nutrient canals. Their sites of entry and angulation are almost constant and characteristically directed away from the growing epiphysis.
Except for a few with double or no foramina, 90% of long bones have a single nutrient foramen in the middle third of the shaft. The nutrient arteries divide into ascending and descending branches in the medullary cavity. These approach the epiphysis dividing into smaller rami. Near the epiphysis, they anastomose with the metaphyseal and epiphyseal arteries.
The blood supply of the immature bones is similar, but the epiphysis is a discrete vascular zone separated from the metaphysis by the growth plate. Epiphyseal and metaphyseal arteries enter on both sides of the growth cartilage, with anastamoses between them being few or absent.
Growth cartilage receives its blood supply from both sources and also from an anastamotic collar in the adjoining perichondrium. Young periosteum is more vascular, has more metaphyseal branches, and its vessels communicate more freely with those of the shaft than adult periosteum.
Key Points
Haversian canals typically run parallel to the surface and along the long axis of the bone and generally contain one or two capillaries and nerve fibers.
Volkmann’s canals are channels that assist with blood and nerve supply from the periosteum to the Haversian canal.
The vascular supply of long bones depends on several points of inflow.
Except for a few with double or no foramina (places in bone where capillaries enervate), 90% of long bones have a single nutrient foramen in the middle third of the shaft.
Young periosteum is more vascular and its vessels communicate more freely with those of the shaft compared to adult periosteum.
#bloodsupplyoflongbone #nervesupplyoflongbone #longbone #generalanatomy #arterialsupplyoflongbone #longbone #anatomy #nationalexittest #usmle #usmlestep1 #mbbs #plab #neetpg #nationalexittest #medvizz #drbhanuprakash #medicalstudents #fmge #mbbslectures #medicalcollege #usmlepreparation #usmleprep #longbone #boneanatomy #bonephysiology
https://wn.com/Blood_Supply_And_Nerve_Supply_Of_Long_Bone_General_Anatomy_Animations
📌𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Blood supply and Nerve supply of Long bone - General Anatomy animations
Blood is supplied to mature compact bone through the Haversian canal. Haversian canals are formed when individual lamellae form concentric rings around larger longitudinal canals (approx. 50 µm in diameter) within the bone tissue. Haversian canals typically run parallel to the surface and along the long axis of the bone. The canals and the surrounding lamellae (8–15) are called a Haversian system or an osteon. A Haversian canal generally contains one or two capillaries and nerve fibers. The Haversian canals also surround nerve cells throughout the bone and communicate with osteocytes in lacunae (spaces within the dense bone matrix that contain the living bone cells) through canaliculi. This unique arrangement is conducive to the storage of mineral salt deposits that give bone tissue its strength.
The vascular supply of long bones depends on several points of inflow, which feed complex sinusoidal networks within the bone. These in turn drain to various channels through all surfaces of the bone except that covered by articular cartilage.
Volkmann’s canals are channels that assist with blood and nerve supply from the periosteum to the Haversian canal. One or two main diaphyseal nutrient arteries enter the shaft obliquely through one or two nutrient foramina leading to nutrient canals. Their sites of entry and angulation are almost constant and characteristically directed away from the growing epiphysis.
Except for a few with double or no foramina, 90% of long bones have a single nutrient foramen in the middle third of the shaft. The nutrient arteries divide into ascending and descending branches in the medullary cavity. These approach the epiphysis dividing into smaller rami. Near the epiphysis, they anastomose with the metaphyseal and epiphyseal arteries.
The blood supply of the immature bones is similar, but the epiphysis is a discrete vascular zone separated from the metaphysis by the growth plate. Epiphyseal and metaphyseal arteries enter on both sides of the growth cartilage, with anastamoses between them being few or absent.
Growth cartilage receives its blood supply from both sources and also from an anastamotic collar in the adjoining perichondrium. Young periosteum is more vascular, has more metaphyseal branches, and its vessels communicate more freely with those of the shaft than adult periosteum.
Key Points
Haversian canals typically run parallel to the surface and along the long axis of the bone and generally contain one or two capillaries and nerve fibers.
Volkmann’s canals are channels that assist with blood and nerve supply from the periosteum to the Haversian canal.
The vascular supply of long bones depends on several points of inflow.
Except for a few with double or no foramina (places in bone where capillaries enervate), 90% of long bones have a single nutrient foramen in the middle third of the shaft.
Young periosteum is more vascular and its vessels communicate more freely with those of the shaft compared to adult periosteum.
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- published: 29 Aug 2021
- views: 93146
8:09
Bony Tissue | Anatomy of a Long Bone
In this video, Dr Mike discusses the cells, gels (ground substance), fibres, and minerals within bony tissue. He also looks at the anatomy of a long bone and di...
In this video, Dr Mike discusses the cells, gels (ground substance), fibres, and minerals within bony tissue. He also looks at the anatomy of a long bone and discusses the importance of each part.
https://wn.com/Bony_Tissue_|_Anatomy_Of_A_Long_Bone
In this video, Dr Mike discusses the cells, gels (ground substance), fibres, and minerals within bony tissue. He also looks at the anatomy of a long bone and discusses the importance of each part.
- published: 25 Mar 2019
- views: 118041