Question

question 34
which part of the intervertebral disk is considered the tough, outer layer?
a annulus fibrosus
b nucleus pulposus
c craniosynostosis
d fontanelle

Explanation:

The intervertebral disk has two main parts. The annulus fibrosus is the tough, outer layer made of fibrocartilage that surrounds the nucleus pulposus (the inner, gel - like part). Craniosynostosis is a condition related to premature fusion of skull bones, and a fontanelle is a soft spot in an infant's skull.

Answer:

A. annulus fibrosus