Palatoglossus is the only tongue muscle innervated by the vagus nerve 
– main action is to elevate the posterior portion of the tongue and to aid in swallowing

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Genioglossus, hyoglossus, and styloglossus are all innervated by the hypoglossal nerve (CN XII) 

Geniohyoid muscle is innervated by the ventral ramus of C1 from the cervical plexus