K12 Comparative Embryology: Difference between revisions
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==Gastrulation== | ==Gastrulation== | ||
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| Development of any animal requires the differentiation of different cell types and tissues from essentially the same initial cells. One of the first shared steps is the process of "gastrulation" (means gut formation). This forms the 3 cell layers that will form all the embryo, often described as "germ layers". | | valign=top|Development of any animal requires the differentiation of different cell types and tissues from essentially the same initial cells. One of the first shared steps is the process of "gastrulation" (means gut formation). This forms the 3 cell layers that will form all the embryo, they are often described as the "germ layers" and this stage of development as the "gastrula". The same layers form the same structures in all these animals. | ||
3 Germ Layers: | |||
# '''Ectoderm''' - outer layer of skin (epidermis) and nervous system (central nervous system and peripheral nervous system). | |||
# '''Mesoderm''' - bone, muscle, cartilage, blood (connective tissues) | |||
# '''Endoderm''' - lining of the gut, lungs, endocrine organs. | |||
| [[File:Inner cell mass cartoon.jpg|300px|alt=germ cell layers]] | | [[File:Inner cell mass cartoon.jpg|300px|alt=germ cell layers]] | ||
|} | |} |
Revision as of 12:56, 5 September 2016
Embryology - 26 Apr 2024 Expand to Translate |
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Introduction
All human and animal embryos go through very similar stages of early development. See also Humans and Animal Embryology.
This page introduces a few of the concepts of comparative development shared with all animals.
Meiosis
Mitosis
GastrulationBody Plan
Cite this page: Hill, M.A. (2024, April 26) Embryology K12 Comparative Embryology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/K12_Comparative_Embryology
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