A member asked:

What is the definition or description of: vertebra?

A doctor has provided 1 answer

We have 33 of them: Any of the bones that make up the vertebral column. Each vertebra contains an arched, hollow section through which the spinal cord passes. In humans, the vertebrae are divided into cervical, thoracic, and lumbar sections, and the sacrum and coccyx are both made up of a series of fused vertebrae. The vertebrae are separated by cartilaginous intervertebral disks.

Answered 12/9/2013

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