Cranial Nerves Part 2

Question 1

What CNs emerge from the internal acoustic meatus?

Answer 1

CN VII (facial n.)

CN VIII (vestibulocochlear n.)

Question 2

Which branch of CN VII supplies motor innervation to muscles of facial expression?

Answer 2

Somatic motor branch

Question 3

Which branch of CN VII supplies taste to anterior 2/3 of tongue & parasympathetic to sublingual & submandibular glands?

Answer 3

Chorda Tympani

Question 4

The chorda tympani n. supplies what 2 glands?

Answer 4

Sublingual

Submandibular

Question 5

What nerve does the chorda tympani n. join?

Answer 5

Lingual n.

Question 6

This branch of CN V supplies the lacrimal gland and mucus secretion to nasal cavity and palate

Answer 6

Greater petrosal n.

Question 7

The greater petrosal n. projects to the _______ ganglion

Answer 7

pterygopalatine ganglion

Question 8

What fossa is pterygopalatine fossa in?

Answer 8

Infratemporal fossa

Question 9

Bell’s Palsy is cause by defect of what nerve?

Answer 9

Facial n. (CN VII)

*specifically the somatic motor branch

Question 10

2 things CN VIII is responsible for?

Answer 10

Hearing

Balance/equilibrium

Question 11

The cochlear portion of CN VIII is for what

Answer 11

hearing

Question 12

The vestibular portion of CN VIII is for what

Answer 12

balance/equilibrium

Question 13

A tumor at the cerebellopontine angle would affect what 2 CNs?

Answer 13

CN VII (facial n.)

CN VIII (vestibulocochlear n.)

Question 14

What CN innervates the stylopharyngeus m,

Answer 14

CN IX (glossopharyngeal n.)

Question 15

Gen. sensation to post. 1/3 tongue?

Answer 15

CN IX (glossopharyngeal n.)

Question 16

Gen. sensation to oropharynx?

Answer 16

CN IX (glossopharygeal n.)

Question 17

What CN supplies the parotid gland?

Answer 17

CN IX (glossopharyngeal n.)

Question 18

What ganglion does CN IX connect to to get to the parotid gland?

Answer 18

Otic ganglion

Question 19

Innervates soft palate, pharyngeal m. (except stylopharyngeus) and laryngeal intrinsic m.

Answer 19

CN X (vagus n.)

Question 20

Provides parasympathetic innervation of viscera in thorax and abdomen

Answer 20

CN X (vagus n.)

Question 21

The spinal accessory n. CN XI originates from C__-C__

Answer 21

C1-C4

Question 22

Where does CN XI ascend into the cranial cavity through?

Answer 22

Foramen magnum

Question 23

Where does CN XI exit the skull?

Answer 23

Jugular foramen

Question 24

Innervates muscles of the tongue except for palatoglossus

Answer 24

CN XII (hypoglossal n.)