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Gastrulation - Anatomy & Physiology (view source)
Revision as of 13:05, 26 August 2008
, 13:05, 26 August 2008→Mechanism of Gastrulation
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*When the embryo is in it's blastula stage it has two cell layers; the epiblast and hypoblast.
*When the embryo is in it's blastula stage it has two cell layers; the epiblast and hypoblast.
−**The epiblast is columnar whilst the hypoblast is cubiodal - each is a single cell thick.
+**The epiblast is columnar whilst the hypoblast is cuboidal - each is a single cell thick.
*'''The epiblast gives rise to all three cell layers; the hypoblast makes no contribution'''.
*'''The epiblast gives rise to all three cell layers; the hypoblast makes no contribution'''.
*The endoderm and mesoderm develop by proliferation and migration of cells of the epiblast.
*The endoderm and mesoderm develop by proliferation and migration of cells of the epiblast.