Xii

Hypoglossal

Primarily motor

Motor fibers transmit impulses to muscles that move the tongue; some proprioceptor input.

gion, anterior branches of the spinal nerves combine to form complex networks called plexuses instead of continuing directly to the peripheral body parts. In a plexus, the fibers of various spinal nerves are sorted and recom-bined, so that fibers associated with a particular peripheral body part reach it in the same nerve, even though the fibers originate from different spinal nerves (fig. 11.33).

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