intervertebral disk

Layers of fibrocartilage between the bodies of adjacent vertebrae, consisting of the annulus fibrosus and the nucleus pulposus; acts as a cushion and shock absorber for the spine;  disk can also be spelled "disc".

►click here to learn more(see figure 62.1-A)-link provided by: University of Pennsylvania, College of Veterinary Medicine 

Related Words

annulus fibrosus ; fiber ; nucleus pulposus ; spine ; vertebra