ANAT 3010 Lecture Notes - Lecture 23: Neural Crest, Germ Layer, Neural Tube
9 Apr 2020
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Anat 3010 lecture 23 march 16, 2020 embryology i: gametogenesis, early development, implantation. Primer of terms: basic types of cellular organization during embryogenesis, epithelium: tightly joined sheet of cells, containing a basement membrane and organized polarity (top down organization). Non-motile cells; adherent cells that lines many organs: mesenchyme: loosely associated cells, having multiple processes. In males, giver rise to the spermatogonia, in females give rise to oocytes. There are the immortal cells of live, propagated from generation to generation. Section of a mouse embryo showing mesenchymal cells (me) in green ad epithelial cells (ep) enclosing a lumen: mesenchyme cells have many processes and can be migratory in the tissue. Epithelial cells organize tightly against each other, forming a thin sheet of structure. Development is not just about potential but also about growth. The schematic shows the dramatic growth of the embryo from fertilization to being a.
