Exam 2: CN 11

Question 1

Accessory N exclusively

Answer 1

Motor

Question 2

Cell bodies in ____ contribute axons to cranial root

Answer 2

Nucleus ambiguous

Question 3

Roots of CN11

Answer 3

Spinal

Cranial

Question 4

Spinal nucleus of accessory N found at

Answer 4

Anterior horn of gray matter, FM to C5/C6

Question 5

NO for cranial root

Answer 5

Nucleus ambiguous

Question 6

NO for spinal root

Answer 6

Spinal nucleus of accessory N

Question 7

AO of cranial root

Answer 7

Lateral aspect of MO (rootlets)

Question 8

Cranial root exits skull in

Answer 8

Jugular foramen

Question 9

Fibers from cranial root split from spinal root and joint ____ at inferior ganglion

Answer 9

Vagus

Question 10

Cranial root fibers carried in vagus distributed to

Answer 10

Pharyngeal plexus

External and recurrent laryngeal nerves

Question 11

Cranial root contributes motor supply to laryngeal muscles except

Answer 11

Cricoarytenoid

Question 12

AO of spinal root

Answer 12

Lateral aspect of cord to C5-C6

Question 13

Trunk of spinal root ascends between ____ and posterior rootlets

Answer 13

Denticulate ligaments

Question 14

Spinal root enters skull via

Answer 14

Foramen magnum

Question 15

Spinal root combines with ___ and passes through jugular foramen

Answer 15

Cranial root

Question 16

Spinal root passes deep to

Answer 16

SCM

Question 17

Spinal root traverses _____, deep to trapezius

Answer 17

Posterior triangle

Question 18

Trapezius receive motor supply from

Answer 18

Cervical plexus (lower 2/3)
Accessory N (upper and middle portion)

Question 19

Interruption of spinal component leads to

Answer 19

SCM paralysis - inability to turn face to opposite side

Question 20

If trapezius and brachial plexus damaged..

Answer 20

Brachial plexus traction due to traps being unable to support scapula

Question 21

Spasmodic Torticollis

Answer 21

Painful episode contraction