Nerves

Question 1

CN I ?

Answer 1

Olfactory

Question 2

CN II

Answer 2

Optic

Question 3

CNIII

Answer 3

Oculomotor

Question 4

CN IV

Answer 4

Trochlear

Question 5

CN V

Answer 5

Trigeminal

Question 6

CN VI

Answer 6

Abducens

Question 7

CN VII

Answer 7

Fascial

Question 8

CN VIII

Answer 8

Vestibulocochlear

Question 9

CN IX

Answer 9

Glossopharyngeal

Question 10

CN X

Answer 10

Vagus

Question 11

CN XI

Answer 11

Accessory

Question 12

CN XII

Answer 12

Hypoglossal

Question 13

What is CN XII responsible for?

Answer 13

Hypoglossal –> Toungue muscles (Intrinsic and extrinsic)

Question 14

What is CN XI responsible for?

Answer 14

Accessory–> Trapezius and SCM

Question 15

What is CN X responsible for?

Answer 15

Vagus –> Innervates smooth muscles and glands of the heart, lungs larynx, trachea, and most abdominal organs

Question 16

Visceral sensation (excluding pain) from heart, lungs, abdominal organs, bronchi, trachea, larynx, pharynx, gastrointestinal tract to level of descending colon.
General sensation from the external acoustic meatus, eardrum, and pharynx is connected to What CN ??

Answer 16

X –> Vagus

Question 17

What is CN IX responsible for?

Answer 17

Provides motor, parasympathetic and sensory information to your mouth and throat

Question 18

What is CN VIII responsible for?

Answer 18

Vestibulocochlear–> Hearing (cochlear branch); linear and angular acceleration, or head position in space/equilibrium (vestibular branch)

Question 19

What is CN VII responsible for?

Answer 19

Fascial –> Taste from anterior two-thirds of tongue, Fascial expressions (Stylohyoid, Digastric,Stepedius)

Question 20

What is CN VI responsible for?

Answer 20

Abducens –> Innervate the lateral rectus muscle of eye (abducts the eye)

Question 21

What is CN V responsible for?

Answer 21

Trigeminal–> Conducts touch, temperature and pain sensation from the
- face, nose, mouth, nasal and oral mucosa, anterior two-thirds of tongue

• Innervate the muscles of mastication, mylohyoid, digastric (anterior belly), tensor veli palatini, and tensor tympani

Question 22

What is CN IV responsible for?

Answer 22

Innervate the superior oblique eye muscle (moves the eye inferiorly and laterally

Question 23

What is CN III responsible for?

Answer 23

constricts the pupil), and the ciliary muscle (accomodate the eye for near vision)

Innervates the inferior oblique muscle and medial, inferior, and superior rectus muscles of the eye

Question 24

CN II is responsible for?

Answer 24

Vision

Question 25

CN I is responsible for?

Answer 25

Smell

Question 26

CN I Is located where and terminates where ?

Answer 26

terminates at the olfactory bulb, located just above the ethmoid bone

Question 27

What are the 3 major functions of the Occulomotor Nerve

Answer 27

Innervation of eye muscles for for gaze fixation and eye tracking (somatic motor) Innervation to the lens and pupil (autonomic parasympathetic) I nnervation to the upper eyelid (somatic motor)

Question 28

Where does the oculomotor CNIII originate? Where is it?

Answer 28

It originates from the oculomotor nucleus and the Edinger-Westphal nucleus within the midbrain of the brainstem.

Question 29

What Cranial nereve is responsible for Eyeball depression, and Eyeball intorsiond?

Answer 29

Trochlear Nerve

Question 30

Trigeminal Nerve divides into 3 nerves distal to the trigeminal ganglion

Answer 30

Ophthalmic nerve (V1), Maxillary (V2), Mandibular nerve (V3)

Question 31

What nerves are responsible for the extraocular motor functions of the eye

Answer 31

Abducens nerve (CN VI). Oculomotor nerve (CN III), Trochlear nerve (CN IV),