Somite Musculoskeletal Movie: Difference between revisions

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Embryology - 18 Apr 2024 Expand to Translate
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<html5media height="380" width="340">File:Somite 001.mp4</html5media>

Somite Musculoskeletal Contributions to the Trunk

Animation shows the musculoskeletal components formed from the somite. Somite origin structures are labeled pink. Note that dermis contribution from the somite is not shown in this animation.

Skeletal
- Vertebra
- Intervertebral Disc
Muscular
- Epaxial muscles (dorsal)
- Hypaxial muscles (ventral)

Epaxial Muscles

lie dorsal to the horizontal septum of the vertebrae
innervated by the dorsal ramus of spinal nerves
Humans - erector spinae, transversospinal muscles (multifidus, semispinalis and rotatores), splenius and suboccipital muscles.
myogenesis regulated by Wnt (+) from neural tube and Shh (+) from floor plate and notochord.

Hypaxial Muscles

lie ventral to the horizontal septum of the vertebrae
innervated by the ventral ramus of spinal nerves
lateral and ventral muscle wall of the trunk (intercostal, abdominal) and limb muscles.
myogenesis regulated by Wnt (+) from dorsal ectoderm and BMP (-) from lateral mesoderm.

1 paraxial
2 early somite
3 sclerotome and dermomyotome
4 dermatome and myotome
5 somite spreading

Note - the cartoons show just the embryo righthand side mesoderm development (the same events occur on the lefthand side).

Glossary Links: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Movies

Cite this page: Hill, M.A. (2024, April 18) Embryology Somite Musculoskeletal Movie. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Somite_Musculoskeletal_Movie

What Links Here?

@@ Line 2: / Line 2: @@
 {| border='0px'
 |-
-| width=250px|<mediaplayer width='300' height='300' image="http://php.med.unsw.edu.au/embryology/images/5/58/Somite_001_icon.jpg">File:Somite 001.mp4</mediaplayer>
+| width=350px|<html5media height="380" width="340">File:Somite 001.mp4</html5media>
 | [[File:Somite_001_icon.jpg|100px|right]]
 ===Somite Musculoskeletal Contributions to the Trunk===
@@ Line 16: / Line 16: @@
-:'''Links:'''  [[Media:Somite 001.mp4|MP4]] | [[Media:Somite 001.mov|Quicktime]] | [[Lecture_-_Mesoderm_Development|Lecture - Mesoderm]] | [[Musculoskeletal_System_-_Axial_Skeleton_Development|Axial Skeleton]] | [[Musculoskeletal_System_-_Muscle_Development|Muscle]] | [[Musculoskeletal_System_Development|Musculoskeletal Development]] | [[Movies]]
+:'''Links:'''  [[Media:Somite 001.mp4|MP4]] | [[Lecture_-_Mesoderm_Development|Lecture - Mesoderm]] | [[Musculoskeletal_System_-_Axial_Skeleton_Development|Axial Skeleton]] | [[Musculoskeletal_System_-_Muscle_Development|Muscle]] | [[Musculoskeletal_System_Development|Musculoskeletal Development]] | [[Movies]]
-|}
+|-
+| [[File:Somite_cartoon5.png]]
+|
 ===Epaxial Muscles===
 * lie dorsal to the horizontal septum of the vertebrae
@@ Line 31: / Line 32: @@
 * myogenesis regulated by Wnt (+) from dorsal ectoderm and BMP (-) from lateral mesoderm.
+<gallery>
+File:Somite cartoon1.png|'''1''' paraxial
+File:Somite cartoon2.png|'''2''' early somite
+File:Somite cartoon3.png|'''3''' sclerotome and dermomyotome
+File:Somite cartoon4.png|'''4''' dermatome and myotome
+File:Somite cartoon5.png|'''5''' somite spreading
+</gallery>
+''Note - the cartoons show just the embryo righthand side mesoderm development (the same events occur on the lefthand side).''
+:[[Somitogenesis|'''Somite Links''']]: [[:File:Somite cartoon1.png|'''1''' paraxial]] | [[:File:Somite cartoon2.png|'''2''' early somite]] | [[:File:Somite cartoon3.png|'''3''' sclerotome and dermomyotome]] | [[:File:Somite cartoon4.png|'''4''' dermatome and myotome]] | [[:File:Somite cartoon5.png|'''5''' somite spreading]] | [[:File:Stage11_sem100.jpg|SEM image - Human Embryo (week 4) showing somites]] | [[Somitogenesis_Molecular_Movie|Movie - somitogenesis Hes expression]]
+|}