Difference between revisions of "Mesoderm"

From Embryology
(Introduction)
(Introduction)
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==Introduction==  
 
==Introduction==  
 
[[File:Trilaminar_embryo.jpg|thumb|The trilaminar embryo]]
 
[[File:Trilaminar_embryo.jpg|thumb|The trilaminar embryo]]
The middle layer of the early [[T#trilaminar embryo|trilaminar embryo]] germ layers consisting of ectoderm, mesoderm and endoderm.
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The middle layer of the early [[T#trilaminar embryo|trilaminar embryo]] germ layers (ectoderm, mesoderm and endoderm) formed by gastrulation.
  
 
:'''Mesoderm Links:''' [[2010_Lecture_5|Lecture - Mesoderm Development]] | [[Notochord]] | [[Development Animation - Notochord]] | [[Somitogenesis]] |  [[Musculoskeletal System Development|Musculoskeletal]] | [[Neural_System_Development|Neural]] | [[Sonic hedgehog]] | [[:Category:Mesoderm]]
 
:'''Mesoderm Links:''' [[2010_Lecture_5|Lecture - Mesoderm Development]] | [[Notochord]] | [[Development Animation - Notochord]] | [[Somitogenesis]] |  [[Musculoskeletal System Development|Musculoskeletal]] | [[Neural_System_Development|Neural]] | [[Sonic hedgehog]] | [[:Category:Mesoderm]]

Revision as of 15:05, 8 August 2010

Introduction

The trilaminar embryo

The middle layer of the early trilaminar embryo germ layers (ectoderm, mesoderm and endoderm) formed by gastrulation.

Mesoderm Links: Lecture - Mesoderm Development | Notochord | Development Animation - Notochord | Somitogenesis | Musculoskeletal | Neural | Sonic hedgehog | Category:Mesoderm

Some Recent Findings

  • Transcriptional profiling of the nucleus pulposus: say yes to notochord[1]"This editorial addresses the debate concerning the origin of adult nucleus pulposus cells in the light of profiling studies by Minogue and colleagues. In their report of several marker genes that distinguish nucleus pulposus cells from other related cell types, the authors provide novel insights into the notochordal nature of the former. Together with recently published work, their work lends support to the view that all cells present within the nucleus pulposus are derived from the notochord. Hence, the choice of an animal model for disc research should be based on considerations other than the cell loss and replacement by non-notochordal cells."

Mesoderm Formation during Gastrulation

<Flowplayer width="390" height="510" autoplay="true">Mesoderm_001.flv</Flowplayer> This animation shows the migration of mesoderm throughout the embryonic disc during gastrulation.

The pink arrow show how mesodermal cells spread out between the ectoderm and endoderm layers, forming the third layer of the trilaminar embryo.

Axial process - the arrow running from the primitive node upward is the axial process which will later form the notochord.

There are only 2 regions where no mesoderm is found: buccopharyngeal membrane and cloacal membrane.

  • these two regions form the upper and lower ends of the gastrointestinal tract.

Prechordal plate - lies above the buccopharyngeal membrane and is the cardiogenic mesoderm, that will form the heart.



Links: Gastrulation

Patterning

Notochord secreting sonic hedgehog, shown in white
Neuralplate cartoon.png Somite cartoon5.png
Neural tube patterning Somite patterning

Molecular Factors

References

  1. <pubmed>20497604</pubmed>

Reviews

<pubmed>20568241</pubmed>

Articles

<pubmed>20565707</pubmed>

Search PubMed

Search NLM Online Textbooks: "Mesoderm" : Developmental Biology | The Cell- A molecular Approach | Molecular Biology of the Cell | Endocrinology


Search Pubmed: Mesoderm | Notochord

External Links

Glossary Links

Glossary: 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 | Term Link

Cite this page: Hill, M.A. (2019, September 23) Embryology Mesoderm. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Mesoderm

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G