HFF Midterm 1

Question 1

What nerve innervates the SCM?

Answer 1

CN XI (spinal accessory nerve)

Question 2

What is the action of CN XI (spinal accessory n.)?

Answer 2

flexes head to isilateral side, rotates chin to opposite side; both SCMs acting together flex neck

Question 3

What muscles does the ansa cervicalis innervate?

Answer 3

All infrahyoid muscles but the cricothyroid, i.e. superior belly of omohyoid, sternohyoid, sternothyroid, thyroid

Question 4

Which CN is the spinal accessory nerve?

Answer 4

XI

Question 5

This muscle lengthens the vocal cords.

Answer 5

Cricothyroid

Question 6

What nerve innervates the cricothyroid?

Answer 6

External laryngeal nerve from vagus CNX

Question 7

What function does the anterior digastric muscle have

Answer 7

Raises hyoid bone, assists in opening mouth

Question 8

Which muscles does the facial nerve, VII innervate?

Answer 8

Posterior belly of digastric and stylohoiid

Question 9

CN VII is the _______ nerve

Answer 9

fascial

Question 10

Which nerve causes retraction and raising of hyoid?

Answer 10

Fascial nerve, VII

Question 11

What nerve is CNXII?

Answer 11

Hypoglossal

Question 12

What does the hypoglossal nerve do?

Answer 12

depresses and retracts tongue

Question 13

Which muscle does the hypoglossal nerve innervate?

Answer 13

Hypoglossus, duh

Question 14

Hypoglossal nerve is CN _____

Answer 14

XII

Question 15

Fascial nerve is CN _____

Answer 15

VII

Question 16

External laryngeal nerve comes off of CN _____

Answer 16

X

Question 17

The vagus nerve is CN _____

Answer 17

X

Question 18

Spinal accessory nerve is CN ____

Answer 18

XI

Question 19

CN XII is ______

Answer 19

hypoglossal

Question 20

CN VII is ______

Answer 20

fascial nerve

Question 21

CN X is _______

Answer 21

vagus nerve, external laryngeal branches off

Question 22

CN XI is _______

Answer 22

spinal accessory nere