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Concerning the intervertebral disc, the right description is

Concerning the intervertebral disc, the right description is
A.22 in number in adults
B.is a symphysis between vertebral arches
C.is composed of anulus fibrous and nucleus pulposus
D.the nucleus pulposus protrude anterorlaterally easily
E.the anulus fibrosus is an inner soft, highly elastic structure
正确答案:is composed of anulus fibrous and nucleus pulposus