Ch 7 A&p Cranial Nerves

Front 1

provides motor functions to the soft palate, pharynx, and larynx, carries sensory fibers from the inferior pharynx, larynx, thoracic and abdominal organs, taste bud fibers from the posterior tongue

Back 1

(x) vegas nerve

Front 2

provides motor innervation to the muscles of the soft palate and pharynx and to the sternocleidomastoid and trapezius muscles

Back 2

(XI) spinal accessory nerve

Front 3

provides motor function to the muscles of the tongue and throat

Back 3

(XII) hypoglossal nerve

Front 4

supplies motor fibers to the pharyngeal muscles. it provides taste sensation to the posterior portion of the tongue and carries parasympathetic fibers to the salivary glands

Back 4

(IX) Glossopharyngeal nerve

Front 5

passes through the internal auditory meatus and provides the senses of hearing and balance

Back 5

(VIII) Vestibulocochlear nerve

Front 6

supplies motor activity to all muscles of facial expression, the sense of taste to the anterior two thirds of the tongue, and cutaneous sensation to the external ear, tongue, and palate. also parasympathetic stimulation to the salivary glands lacrimal gland and the glands of the nasal cavity and palate.

Back 6

(VII) facial nerve

Front 7

supplies the lateral rectus muscle of the eyeball (lateral movement)

Back 7

(VI) abducens nerve

Front 8

supplies sensation to the scalp, forehead, face, and lower jaw via three branches; the ophthalmic, maxillary, and mandibular division. also chewing (mastication)

Back 8

(V) trigeminal nerve

Front 9

innervates the superior oblique muscles of the eyeball, which allow for downward gaze

Back 9

(IV) trochlear nerve

Front 10

Innervates the muscles that cause motion of the eyeballs and upper lip. the oculomotor nerve also carries parasympathetic nerve fibers that cause constriction of the pupils .

Back 10

(III) oculomotor nerve

Front 11

provides the sense of vision

Back 11

(II) optic nerve

Front 12

Provides the sense of smell

Back 12

(I) olfactory nerve