Figure 4 - Distribution of hypoglossal (XII) nerve.
From the following article
Physiology of oral cavity, pharynx and upper esophageal sphincter
Benson T. Massey
GI Motility online (2006)
doi:10.1038/gimo2
Note that the XII cranial nerve provides motor innervation to tongue and many of the suprahyoid muscles including the geniohyoid muscle. Along with the cervical accessory (XI) nerve, it also innervates the infrahyoid muscles. (Source: Netter medical illustration with permission of Elsevier. All rights reserved.)
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