What are the two main components of intervertebral disks?

Study for the NPTE Physical Therapist Assistant Exam. Ace the test with comprehensive flashcards and multiple-choice questions. Each query offers hints and detailed explanations. Get thoroughly prepared for your examination!

The correct components of intervertebral disks are the anulus fibrosus and nucleus pulposus. The anulus fibrosus is the tough, outer ring-like structure that surrounds and contains the inner portion of the disk, providing stability and resilience to the spine. It is made up of several layers of fibrocartilage, which help absorb shock and resist tensile forces.

The nucleus pulposus, on the other hand, is the gel-like center of the intervertebral disk. It consists of a loosely organized network of collagen fibers and proteoglycans that provides the disk with its ability to absorb compressive forces. The nucleus pulposus is crucial for maintaining the height of the intervertebral disk and enables it to act as a cushion between the vertebrae during movement and weight-bearing activities.

Understanding these two components is vital because they work together to maintain spinal flexibility and integrity, prevent herniations, and contribute to the overall function of the intervertebral spaces in the spine.

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