The embryonic notochord will eventually be replaced by the developing ________, leaving only remnants that persist as the nucleus pulposus of intervertebral discs.
A) spinal cord
B) pharynx
C) lateral muscle
D) vertebral column

Question

Quizplus · Accepted Answer

The notochord acts as a template for the formation of the vertebral column during development. As the vertebral column develops, the notochord is gradually replaced by bone and other tissues. Small remnants of the notochord persist within the intervertebral discs, specifically as the nucleus pulposus. Therefore, the correct answer is D) vertebral column.

The Embryonic Notochord Will Eventually Be Replaced by the Developing