NEET PG DENTAL EXAM

Detailed explanation-1: -The hypoglossal nerve is mainly a somatic efferent (motor) nerve to innervate the tongue musculature. The nerve also contains some sympathetic postganglionic fibers from the cervical ganglia, which innervates tongue vessels and some small glands in the oral mucosa.

Detailed explanation-2: -The hypoglossal nerve emerges as several rootlets (labelled here as number 12) from the olives of the medulla (labelled 13), part of the brainstem. The hypoglossal nerve leaves the skull through the hypoglossal canal, which is situated near the large opening for the spinal cord, the foramen magnum.

Detailed explanation-3: -Introduction. The Hypoglossal nerve is the 12th cranial nerves that originate from the medulla obligate of the brain stem. It innervates all the extrinsic and intrinsic muscles of the tongue, except for the palatoglossus which is innervated by the vagus nerve. It is a nerve with a solely motor function.