The<unk>  is the twelfth cranial nerve (XII). The nerve arises from the hypoglossal nucleus and emerges from the medulla oblongata in the preolivary sulcus separating the olive and the pyramid. It then passes through the hypoglossal canal.  On emerging from the hypoglossal canal, it gives off a small meningeal branch and picks up a branch from the anterior ramus of C1.  It spirals behind the vagus nerve and passes between the internal carotid artery and internal jugular vein lying on the carotid sheath.  After passing deep to the posterior belly of the digastric muscle, it passes to the submandibular region to enter the tongue.
It supplies motor fibres to all of the muscles of the tongue, except the palatoglossus muscle which is innervated by the vagus nerve (X).
Hypoglossal nerve
Nasopalatine nerve
Abducens nerve
Trigeminal nerve
Recurrent laryngeal nerve
Hypoglossal trigone
Auriculotemporal nerve
Vestibulocochlear nerve