If one likens a spinal nerve to the trunk of a tree, then the two roots of this tree are the dorsal and ventral roots. What would represent the two large branches of this tree? In other words, moving away from the spinal cord, the spinal nerve branches into the
A) rami communicantes.
B) dorsal and ventral root ganglia.
C) ventral and dorsal rami.
D) the brachial plexus.

Question

Quizplus · Accepted Answer

The two large branches of the spinal nerve are the ventral and dorsal rami, which contain sensory and motor fibers that innervate different regions of the body. The rami communicantes are smaller branches that connect the spinal nerve to the sympathetic chain ganglia. The dorsal and ventral root ganglia are located at the base of the dorsal and ventral roots, respectively, and contain cell bodies of sensory neurons. The brachial plexus is a network of nerves that form in the lower cervical and upper thoracic regions, innervating the upper limb.

If One Likens a Spinal Nerve to the Trunk of a Tree