While viewing a picture of a three-week-old embryo, Dr. Payne points to something and says, "This structure will soon become a tube from which the brain and spinal cord will develop." What is Dr. Payne pointing at?
A) the neural plate
B) the corpus callosum
C) the frontal cortex
D) an axon

Question

Quizplus · Accepted Answer

The neural plate is a structure that forms during the third week of embryonic development and eventually transforms into the neural tube. The neural tube then goes on to develop into the brain and spinal cord. Therefore, when Dr. Payne points to a structure that will soon become a tube from which the brain and spinal cord will develop, she is most likely pointing at the neural plate.

While Viewing a Picture of a Three-Week-Old Embryo, Dr