What is a “foramen”? A. a basin-like depression serving as an articular surface. B. a raised roughening which is a site for muscle attachment. C. a hole through a bone for a nerve or blood vessel. D. a sharp slender projection of bone.
Option C. The foramen is the bony hole archway created through pedicles of adjoining vertebrae, developing a passageway thru which all spinal nerve roots run.