If an embryo exhibits abnormal development of peripheral nerves, the source of the problem is most likely damage or impairment of
A) the neural tube.
B) neural crest cells.
C) endoderm.
D) somites.
E) the notochord.

Question

Quizplus · Accepted Answer

Neural crest cells are responsible for giving rise to multiple structures including the peripheral nervous system. Abnormal development of peripheral nerves is likely due to damage or impairment of neural crest cells. The other structures listed (neural tube, endoderm, somites, notochord) do not have a direct role in the development of the peripheral nervous system.

If an Embryo Exhibits Abnormal Development of Peripheral Nerves, the Source