Which structure in birds and mammals is the equivalent of the dorsal lip of the amphibian blastopore?
A) Blastocoel
B) Hensen's node
C) Primitive groove
D) Epiblast
E) Hypoblast

Question

Quizplus · Accepted Answer

Hensen's node is the functional equivalent of the dorsal lip of the amphibian blastopore in birds and mammals. It forms during gastrulation and is responsible for inducing the formation of the nervous system and other dorsal structures. Choices A, C, D, and E do not correspond to the dorsal lip of the amphibian blastopore.

Which Structure in Birds and Mammals Is the Equivalent of the Dorsal