Cranial Nerves Flashcards
CN I
Olfactory
Sensory
functional innervation involved with smell/olfaction
CN II
Optic
Sensory
functional innervation involved with vision
“optic chiasma”
CN III
Occulomotor
Motor
functional innervation involved with 4/6 extrinsic eye muscles
Parasympathetic motor: iris and lens
CN IV
Trochlear
Motor
innervates 1/6 of the superior oblique muscle
CN V
Trigeminal
Motor and Sensory
M: functional innervation of muscles of mastication (to chew)
S: functional innervation of face sensations, oral cavity
CN VI
Abducens
Motor
functional innervation of 1/6 of lateral rectus
(LR6 SO4 3)
CN VII
Facial muscles
Motor and Sensory
M: functional innervation of the facial muscles
S: functional innervation of the anterior 2/3 of taste buds
Parasympathetic: lacrimal gland, submandibular, sublingual glands
CN VIII
Vestibulocochlear
Sensory
functional innervation of hearing equilibrium
vestibulo and cochlear of inner ear
CN IX
Glossopharyngeal
Motor and Sensory
M: pharynx muscle (swallowing)
S: posterior 1/3 of the tongue
Parasympathetic: parotid gland
tongue and pharynx
CN X
Vagus
Motor and Sensory
M: functional innervation of pharynx and larynx muscles
S: most organ visceral sensory
Parasympathetic: thoracic and abdominal organs
CN XI
Accessory
Motor
functional innervation of neck muscles (trapezius and sternocleidomastoid)
“neck movements”
CN XII
Hypoglossal
Motor
functional innervation of tongue muscles
