"superior root of the ansa cervicalis (descending hypoglossal nerve): C1 motor fibres innervating the infrahyoid (strap) muscles diverge from the hypoglossal nerve just lateral to the occipital artery, as the nerve lies between the internal jugular vein and internal carotid artery 2"
"nerve to thyrohyoid: C1 motor fibres diverge as the hypoglossal nerve lies on the loop of the lingual artery"
"nerve to geniohyoid: C1 motor fibres diverge as the hypoglossal nerve passes near the mylohyoid muscle"
"meningeal branch: C2 sensory fibres pass retrogradely along the course of the hypoglossal nerve, to innervate a region of dura mater lining the floor and posterior wall of the posterior cranial fossa"
"The hypoglossal nerve is the twelfth cranial nerve (CN XII) (TA: nervus hypoglossus or nervus cranialis XII). It arises from the medulla and passes through the hypoglossal canal to the neck, where it travels to the sublingual space to supply somatic motor innervation to all of the intrinsic and extrinsic muscles of the tongue, with the exception of the palatoglossus muscle, which is innervated by the vagus nerve."
"superior root of the ansa cervicalis (descending hypoglossal nerve): C1 motor fibres innervating the infrahyoid (strap) muscles diverge from the hypoglossal nerve just lateral to the occipital artery, as the nerve lies between the internal jugular vein and internal carotid artery 2"
"superior root of the ansa cervicalis (descending hypoglossal nerve): C1 motor fibres innervating the infrahyoid (strap) muscles diverge from the hypoglossal nerve just lateral to the occipital artery, as the nerve lies between the internal jugular vein and internal carotid artery 2"
"nerve to thyrohyoid: C1 motor fibres diverge as the hypoglossal nerve lies on the loop of the lingual artery"
"nerve to geniohyoid: C1 motor fibres diverge as the hypoglossal nerve passes near the mylohyoid muscle"
"meningeal branch: C2 sensory fibres pass retrogradely along the course of the hypoglossal nerve, to innervate a region of dura mater lining the floor and posterior wall of the posterior cranial fossa"
Expected headings
"Nucleus and intraparenchymal portion"
"Cisternal portion"
"Intracanalicular portion"
"Cervical portion"
"Sublingual portion"
"Branches"
"The hypoglossal nerve descends through the neck in the retrostyloid space, initially medial to the internal carotid artery. In this location, the hypoglossal nerve is in close relation to other lateral pharyngeal structures, including the internal jugular vein, and the glossopharyngeal, vagus and spinal accessory nerves 1,3."