The entire human nervous system develops from the
A) brainstem.
B) neural ectoderm.
C) mesoderm.
D) telencephalon.

Question

Quizplus · Accepted Answer

The nervous system starts to take shape during the third week of embryonic development.A thickened plate of ectoderm gives rise to the central nervous system and peripheral nervous system.The neural tube is the precursor of the future brain and spinal cord.The mesoderm and telencephalon are not the primary sources of nervous system development.

The Entire Human Nervous System Develops from the