CNs

Question 1

CNs for speech

Answer 1

CN V - - the trigeminal nerve

CN VII - - the facial nerve

CN IX - - the glossopharyngeal nerve

CN X - - the vagus nerve

CN XI - - the spinal accessory nerve

CN XII - - the hypoglossal nerve

Question 2

CN mmnemonic

Answer 2

Oh Oh Oh Tiny Tits Are Fun And Give Virgins Awkward Hips

Some Say Money Matters But My But My Boyfriend Says Big Boobs Make Money

Question 3

CN I

Answer 3

Olfactory

Question 4

CN II

Answer 4

Optic

Question 5

CN III

Answer 5

Occulomotor

Question 6

CN IV

Answer 6

Trochlear

Question 7

CN V

Answer 7

Trigeminal

Question 8

CN VI

Answer 8

Abducens

Question 9

CN VII

Answer 9

Facial

Question 10

CN VIII

Answer 10

Vestibular/Acoustic

Question 11

CN IX

Answer 11

Glossopharyngeal

Question 12

CN X

Answer 12

Vagus

Question 13

CN XI

Answer 13

Spinal Accessory

Question 14

CN XII

Answer 14

Hypoglossal

Question 15

Trigeminal-V

Answer 15

mixed nerve originates in the pons. It provides motor innervation to the muscles that control the mandible (jaw), the tensor veli palatini muscle of the velum, and the tensor tympani muscle of the middle ear.

It mediates sensation from the head, jaw, face, some of the sinuses and tactile sensation from the anterior two thirds of the tongue.

Question 16

Facial- VII

Answer 16

mixed nerve.

The facial nerve mediates taste in the anterior two thirds of the tongue.

innervates all of the muscles of facial expression including those in the forehead, cheeks, and lips, as well as the stapedius muscle of the middle ear.

The part of the nucleus that sends commands to the upper part of the face receives bilateral (ipsalateral and contralateral) innervation from upper motor neuronal tracts. However, the portion that controls the lower part of the face receives only contralateral (unilateral) innervation. This means that unilateral lesions of the pyramidal tract may have noticeable effects on voluntary movements of the cheeks and lips. Note that involuntary facial expressions of emotion will not be impaired in the case of a pyramidal tract lesion as they are controlled by the extrapyramidal tract.so that if a patient smiles both sides of the mouth will lift normally. With lower motor neuron lesions the entire side of the face will be paralyzed and won’t respond to either voluntary or involuntary upper motor neuron input.

Question 17

Glossopharyngeal- IX

Answer 17

mixed nerve.

Its motor aspect contributes to the action of the middle pharyngeal constrictor muscle and innervates the stylopharyngeus muscle.

Its sensory aspect carries input from the posterior one third of the tongue, the velum, and the pharynx including the tonsils.

Question 18

Vagus-X

Answer 18

mixed nerve originates in the medulla.

One of the motor nuclei of the vagus innervates the majority of the viscera, including the heart, respiratory system, and digestive system.

Another motor nucleus sends motor commands to the pharyngeal constrictor muscles and completely controls the intrinsic musculature of the larynx. The superior branch of the vagus innervates the cricothyroid muscle and so is involved in pitch changes. Its recurrent branch innervates all of the other intrinsic laryngeal musculature.

The vagus also innervates the glossopalatine and levator veli palatine muscles, making it primarily responsible for palatal functioning.

Question 19

Accessory- XI

Answer 19

motor nerve that originates in the medulla. It innervates the trapezius and sternocleidomastoid muscles of the neck. It also sends some motor messages to the uvula and the levator veli palatine (raises the velum).

Question 20

Hypoglossol- XII

Answer 20

motor nerve that originates in the medulla.

It controls tongue movement, innervating both the intrinsic and extrinsic tongue muscles. The part of the nucleus that innervates the genioglossus, the muscle involved in tongue protrusion, is connected only to contralateral fibers from the pyramidal tract. Thus, unilateral upper motor lesions can affect this type of movement. All other tongue muscles receive bilateral innervation for voluntary movements.