Cranial Nerve Functions

Question 1

Olfactory

Answer 1

Sense of smell

Question 2

Optic

Answer 2

Vision

Question 3

Oculomotor

Answer 3

Eye muscles elevate eyelid; Constricts pupil & ciliary muscles to adjust light

Question 4

Trochlear

Answer 4

Moving the eye

Question 5

Trigeminal

Answer 5

Sensory impulses from surface of eye, tear glands, teeth, & skin; muscles of mastication, mylohyoid, digastric

Question 6

Abducens

Answer 6

Muscles that move the eye

Question 7

Facial

Answer 7

Taste receptors on anterior two-thirds of tongue; muscles of facial expressions, digastric, stylohyoid; increases secretion from lacrimal gland of eye, submandibular & salivary glands

Question 8

Vestibulocochlear

Answer 8

Hearing & equilibrium

Question 9

Glossopharyngeal

Answer 9

Taste from posterior one-third of tongue; sensory impulses from pharynx, tonsils, & carotid arteries; increases secretion from parotid salivary gland; muscles used in swallowing

Question 10

Vagus

Answer 10

Visceral sensory info from heart, lungs, & most abdominal organs, & sensory info from external acoustic meatus, part of tympanic membrane, part of pharynx, laryngopharynx, & larynx; Muscles associated with speech & swallowing

Question 11

Accessory

Answer 11

Motor impulses to muscles of soft palate, pharynx, & larynx, & muscles of neck & back

Question 12

Hypoglossal

Answer 12

Motor impulses to muscles that move the tongue