Cranial Nerves

Question 1

olfactory

Answer 1

special sensory - smell

Question 2

optic

Answer 2

special sensory - vision, exits cranial cavity through optic canal

Question 3

oculomotor nerve

Answer 3

main movements of the eye, somatic motor to most extraocular muscles, controls pupil and muscles that adjust lens of the eye (parasympathetic)

Question 4

trochlear nerve

Answer 4

somatic motor to one extraocular muscle of the eye ONLY (superior oblique)

Question 5

trigeminal nerve

Answer 5

major somatic sensory nerve of the head, somatic motor to muscles of mastication (V3 only), three divisions: V1: ophthalmic nerve (somatic sensory only: above eyes and down nose, V2: maxillary nerve (somatic sensory only: upper teeth upper lip bottom part of eyes), V3: mandibular nerve (somatic sensory and motor: rest of face)

Question 6

VI: ophthalmic nerve

Answer 6

somatic sensory only: above eyes and down nose

Question 7

V2: maxillary nerve

Answer 7

somatic sensory only: upper teeth upper lip bottom part of eyes

Question 8

V3: mandibular nerve

Answer 8

somatic sensory and motor: rest of face

Question 9

abducent nerve

Answer 9

somatic motor to one extraocular muscle of the eye ONLY (lateral rectus)

Question 10

facial nerve

Answer 10

does a lot: somatic motor to muscles of facial expression, somatic sensory (external acoustic meatus and skin posterior to ear), parasympathetic to lacrimal gland submandibular and sublingual salivary glands and mucous membranes of the nasal cavity, special sensory (taste) to anterior 2/3s of tongue

Question 11

vestibulocochlear nerve

Answer 11

auditory nerve, special sensory nerve to inner ear, 2 components: vestibular branch to semicircular canals and cochlear brand to cochlea

Question 12

glossopharyngeal nerve

Answer 12

somatic sensory to tonsils pharynx middle ear and posterior 1/3 of tongue, visceral sensory for blood pressure/chemistry via carotid blood, special sensory (taste) to posterior 1/3 tongue, parasympathetic to parotid gland, somatic motor to one muscle of pharynx

Question 13

vagus nerve

Answer 13

somatic sensory from pharynx and larynx, somatic motor to palate muscles and most muscles of pharynx and larynx, visceral sensory from esophagus lungs heart and abdominal viscera of fore-and mid-gut, parasympathetic to smooth muscle of pharynx larynx thoracic viscera and fore- and mid-gut, special sensory (taste) around epiglottis

Question 14

spinal accessory nerve

Answer 14

somatic motor to all intrinsic and most extrinsic muscles of the tongue