BIOL 6265 Lecture Notes - Lecture 6: Oculomotor Nerve, Vestibulocochlear Nerve, Glossopharyngeal Nerve
Cranial Nerves
Located inside bony confines of the skill
Motor & sensory
How many pairs of cranial nerves are there?
12
What is the mnemonic for the cranial nerves?
One Outstanding Oyster Talked To A Fish About Golf, Volleyball, And Hockey
CN I name
Olfactory
CN II name
Optic
CN III name
Oculomotor
CN IV name
Trochlear
CN V name
Trigemnial
CN VI name
Abducens
CN VII name
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Facial
CN VIII name
Acoustic (Vestibulocochlear)
CN IX name
Glossopharyngeal
CN X name
Vagus
CN XI name
Accessory (Spinal)
CN XII name
Hypoglossal
CN I function
Olfactory
Sensory: smell
CN II function
Optic
Sensory: vision
CN III function
Oculomotor
Motor: eye movement MEDIALLY (adduct) and visual reflexes
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CN IV function
Trochlear
Motor: eye movement DOWN and OUTWARD
CN V function
Trigeminal
Sensory: sensation of face, mouth, teeth, and ant. 2/3 of tongue
Motor: muscles of mastication & jaw movement
CN VI function
Abducens
Motor: eye movements LATERALLY (abduct)
CN VII function
Facial
Sensory: ant. 2/3 tongue taste & soft palate sensation
Motor: muscles of face (lips)
CN VIII function
Acoustic
Sensory: hearing and balance
CN IX function
Glossopharyngeal
Sensory: Post. 1/3 tongue taste & sensation, and pharynx sensation
Motor: stylopharyngeus muscle (swallowing)
CN X function
Vagus
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Document Summary
One outstanding oyster talked to a fish about golf, volleyball, and hockey. Motor: eye movement medially (adduct) and visual reflexes. Sensory: sensation of face, mouth, teeth, and ant. 1/3 tongue taste & sensation, and pharynx sensation. Motor: pharynx, intrinsic larynx, soft palate, and neck muscles. Mucous lining of the palate & facial skin. Wrinkle forehead, close eyes tightly, close mouth tightly, pull down corners of mouth, tense ant. neck muscles. Located in ganglia near vestibule and semicircular canals of inner ears. Contain sensory receptors for changes in position of the head. Send impulses to cerebellum for reflexes to engage to maintain equilibrium. Impulses pass thru medullar & midbrain on their way to the temporal lobe where they are interpreted. Cranial: impulses to muscles of soft palate, pharynx, and layrnx. Spinal: descends into the neck to supply motor fibers to trapezius and sternocleiomastoid. Motor fibers carry impulses to muscles of tongue.
