ANAT 381 Lecture Notes - Lecture 11: Cytoskeleton, Zygote, Asymmetric Cell Division
18 Dec 2017
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Initial turn" in involution requires apical constriction. The red cells are the leading edge , they come around, turn inside and move up along the. The cells that go to the inside are going to be the endoderm and the mesoderm , and the. Neural ectoderm . roof of the blastocoel cavity. cells that stay on the outside will be the . As the cells turn, they have to change shape: this change is called apical constriction. As they turn the corner, their apical surface has to get smaller, and the basal cell surface. So individually, the cells have to respond to important signals as they turn so they don"t has to get wider to allow the cell to move. tear apart. Epiboly is the process in which a sheet of cells spreads by thinning. Stretching over the surface of the yolk- not increasing in numbers at this point,
