Question: The origin of the bulk of the extra embryonic membranes versus the embryonic ectoderm in the mous…

The origin of the bulk of the extra embryonic membranes versus
the embryonic ectoderm in the mouse embryo.

a. EEM______________

b. Emb. Ecto_______________

The role of Hensen’s node in a chicken versus the dorsal lip in
the frog.

a. Hensen’s Node_______________

b. Dorsal Lip___________________

During the late stages of neurulation part of the neural tubes
cells leave and migrate through what structure to become the
peripheral nervous system? What is the germ layer from which this
structure arises?