Which of the following is incorrect pertaining to IV discs?

A) They are traversed by blood vessels that are branches of the anterior and posterior spinal arteries.
B) They differ in thickness in different parts of the vertebral column.
C) Cervical and lumbar discs are thicker anteriorly than posteriorly.
D) The nucleus pulposus is primarily composed of water.
E) The annulus fibrosus is composed of concentric lamellae of fibrocartilage.


Ans: A

Anatomy & Physiology

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