5 Questions
Gastrulation begins with the formation of the primitive streak on the surface of the hypoblast.
False
The primitive streak is clearly visible as a narrow groove in a 15- to 16-day embryo.
True
Cell migration and specification during gastrulation are controlled by fibroblast growth factor 8.
True
The cephalic end of the primitive streak is known as the primitive node.
True
FGF8 controls cell movement by upregulating E-cadherin, a protein that normally binds epiblast cells together.
False
Test your knowledge on the process of gastrulation and the formation of the primitive streak in embryonic development. Learn about the formation of the primitive node and the role of cells in the epiblast.
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