Describe the structure and function of an intervertebral disc.

Description should include

• annulus fibrosus
• nucleus pulposus.

Process/Skill Questions:

• What is the main function of the intervertebral disc?
• Intervertebral discs make up what percentage of the total length of the vertebral column?
• What portion/area of the intervertebral disc is most commonly involved in a herniated nucleus pulposus (HNP)?