Cranial Nerves

Question 1

what is the primary function of the olfactory nerve (I)?

Answer 1

Smell (special sensory)

Question 2

what is the origin of the olfactory nerve (I)?

Answer 2

receptors of olfactory epithelium

Question 3

what is the pathway of the olfactory nerve (I)?

Answer 3

olfactory foramina in cribiform plate

Question 4

what is the destination of the olfactory nerve (I)?

Answer 4

olfactory bulbs

Question 5

what is the primary function of the optic nerve (II)?

Answer 5

vision (special sensory)

Question 6

What is the origin of the optic nerve (II)?

Answer 6

retina of the eye

Question 7

what is the pathway of the optic nerve (II)?

Answer 7

optic canals of the sphenoid

Question 8

what is the destination of the optic nerve (II)?

Answer 8

diencephalon via optic chiasm

Question 9

what is the optic chiasm?

Answer 9

where sensory fibers converge and cross opposite of the brain

Question 10

what is the optic tract?

Answer 10

it reorganizes axons leading to lateral and geniculate nuclei

Question 11

what is the primary function of the oculomotor nerve (III)?

Answer 11

eye movements (motor)

Question 12

what is the origin of the oculomotor nerve (III)?

Answer 12

mesencephalon

Question 13

what is the pathway for the oculomotor nerve (III)?

Answer 13

superior orbital fissures of sphenoid

Question 14

what is the destination of the oculomotor nerve (III)?

Answer 14

somatic motor- (superior, inferior, and medial rectus muscles. inferior oblique muscles. levator palpebrae superioris muscle (eye brow)
visceral motor- intrinsic eye muscles

Question 15

what is the oculomotor nerve (III)?

Answer 15

controls 4/6 eye movements and delivers autonomic fibers to cillary ganglion

Question 16

what is the primary function of the trochlear nerve (IV)?

Answer 16

eye movements (motor)

Question 17

what is the origin of the trochlear nerve (IV)?

Answer 17

mesencephalon

Question 18

what is the pathway of the trochlear nerve (IV)?

Answer 18

superior orbital fissure of sphenoid

Question 19

what is the destination of the trochlear nerve (IV)?

Answer 19

superior oblique muscle

Question 20

what is the primary function of the Trigeminal nerve (V)?

Answer 20

mixed muscles (sensory and motor) to the face

Question 21

what is the largest nerve in the body

Answer 21

trigeminal (V) with three major branches

Question 22

what is the structure of the semilunar ganglion?

Answer 22

contains cell bodies of sensory neurons

Question 23

What is the primary function of the facial nerves (VII)?

Answer 23

mixed (sensory and motor) to muscles of the face

Question 24

what is the origin of the facial nerves (VII)?

Answer 24

taste receptors of anterior 2/3rd of the tongue

Question 25

what is the primary function of the vestibulocochlear nerve (VIII)?

Answer 25

hearing (cochlear branch)

balance (vestibular branch)

Question 26

what is the primary function of the glossopharyngeal nerve (IX)?

Answer 26

mixed (sensory and motor) to head and neck

Question 27

what is the primary function of the vagus nerve (X)?

Answer 27

mixed (sensory and motor) widely distributed in thorax and abdomen

Question 28

what is the primary function of the accessory nerve (XI)?

Answer 28

motor to muscles of neck and upper back

Question 29

what is the primary function of the hypoglossal nerve (XII)?

Answer 29

tongue movements (motor)

Question 30

what is the primary function of the abducens nerve (VI)?

Answer 30

eye movements (motor)