Hypoglossal nerve | 合法醫療器材資訊網

Thehypoglossalnerveisthetwelfthandlastcranialnerveandsuppliesthetonguewithmotorcontrol.Itonlyhasonecatch:itreceiveshitch-hikingC1nerveroot ...

The hypoglossal nerve is the twelfth cranial nerve[1] (CN XII) (TA: nervus hypoglossus or nervus cranialis XII). It arises from the medulla[2] and passes through the hypoglossal canal[3] to the neck, where it travels to the sublingual space[4] to supply somatic motor innervation to all of the intrinsic[5] and extrinsic muscles[6] of the tongue, with the exception of the palatoglossus muscle[7], which is innervated by the vagus nerve[8].

In the neck, the hypoglossal nerve sheath receives a hitch-hiking branch of the cervical plexus[9] containing fibers from the C1 and C2 spinal roots. These fibers distribute from the hypoglossal nerve at a number of different points, supplying numerous other muscles of the neck.

The hypoglossal nucleus[10] lies near the midline in the tegmen...