Cranial Nerves

Question 1

What is Nerve I?

Answer 1

Olfactory

Question 2

Nerve II

Answer 2

Optic

Question 3

Nerve III

Answer 3

Oculomotor

Question 4

Nerve IV

Answer 4

Trochlear

Question 5

Nerve V

Answer 5

Trigeminal

Question 6

Nerve VI

Answer 6

Abducens

Question 7

Nerve VII

Answer 7

Facial

Question 8

Nerve VIII

Answer 8

Vestibulocochlear

Question 9

Nerve IX

Answer 9

Glossopharyngeal

Question 10

Nerve X

Answer 10

Vagus

Question 11

Nerve XI

Answer 11

Accessory

Question 12

Nerve XII

Answer 12

Hypoglossal

Question 13

Carries impulses for sense of smell

Answer 13

Olfactory

Question 14

Carries impulses for vision

Answer 14

Optic

Question 15

Where does the oculomotor nerve supply motor fibers?

Answer 15

Superior rectus, inferior rectus, medial rectus, inferior oblique (move the eyeball)

Muscles controlling pupil size and lens shape

Question 16

Supplies motor fibers for superior oblique eye muscle.

Answer 16

Trochlear

Question 17

Conducts sensory impulse from skin of face & mucosa of nose & mouth

Contains motor muscles for chewing muscles.

Answer 17

Trigeminal

Question 18

Supplies motor fibers of lateral rectus muscle.

Answer 18

Abducens

Question 19

Activates the muscles of facial expressions, and lacrimal and salivary glands.

Answer 19

Facial

Question 20

Carries sensory impulses from taste buds of anterior tongue.

Answer 20

Facial

Question 21

The ___ branch of the vestibulocochlear nerve transmits impulses for sense of balance, while the ___ cochlear branch transmits impulses for sense of hearing.

Answer 21

Vestibular; cochlear

Question 22

Supplies motor fibers to the pharynx that promote swallowing and saliva production.

Answer 22

Glossopharyngeal

Question 23

Carries sensory impulses from taste buds of posterior tongue.

Answer 23

Glossopharyngeal

Question 24

The glossopharyngeal nerve forms pressure receptors of the ___ artery.

Answer 24

Carotid

Question 25

Fibers carry sensory impulses from and motor impulses to the pharynx, larynx, and abdominal and thoracic viscera.

Answer 25

Vagus

Question 26

Most motor fibers in the vagus nerve are ___ fibers that promote digestive activity and help regulate heart activity.

Answer 26

Parasympathetic

Question 27

The accessory nerve is composed of mostly motor fibers that activate which muscles?

Answer 27

Sternocleidomastoid and trapezius muscles

Question 28

Motor fibers control tongue movements.

Answer 28

Hypoglossal

Question 29

Fibers emerge from the medulla and descend into the thoracic and abdominal cavities.

Answer 29

Vagus

Question 30

Fibers arise from the superior spinal cord and travel to the muscles of the neck and back.

Answer 30

Accessory

Question 31

From what region of the spinal cord does the accessory nerve arise?

Answer 31

C1-C5

Question 32

Fibers emerge from the medulla and run to the throat.

Answer 32

Glossopharyngeal

Question 33

Fibers run from the medulla to the tongue.

Answer 33

Hypoglossal

Question 34

Fibers run from the medulla to the eye.

Answer 34

Oculomotor and trochlear

Question 35

Fibers emerge from the pons and form three divisions that runs to the face.

Answer 35

Trigeminal

Question 36

Fibers leave the pons and run to the face.

Answer 36

Facial

Question 37

Fibers leave the pons and run to the eye.

Answer 37

Abducens

Question 38

Fibers run from the equilibrium and hearing receptors of the inner ear to the brain stem.

Answer 38

Vestibulocochlear

Question 39

Fibers arise from the olfactory receptors in the nasal mucosa and synapse with the olfactory bulbs.

Answer 39

Olfactory

Question 40

Send fibers to the olfactory cortex.

Answer 40

Olfactory bulbs

Question 41

Fibers arise from the retina or the eye and form what nerve?

Answer 41

Optic

Question 42

The two optic nerves form the ___ by partial crossover of fibers.

Answer 42

Optic chiasma

Question 43

The fibers of the optic nerve continue to the optic cortex as ___.

Answer 43

Optic tracts