unit 4: CN XI, accessory

Question 1

the accessory nerve is exclusively ____ nerve

Answer 1

motor

Question 2

the two accessory roots, cranial and spinal, contribute LMN that supply the:

Answer 2

SCM
traps
muscles of soft palate
pharynx
larynx

Question 3

nucleus of origin for CRANIAL root of accessory n

Answer 3

nucleus ambiguous

Question 4

the SPINAL nucleus of accessory n is found in the _______, where it extends from the foramen magnum level to the _____ level

Answer 4

anterior horn of the gray matter

C5 or C6

Question 5

apparent origin of the CRANIAL accessory n

Answer 5

lateral aspect of MO

Question 6

after emerging, the cranial accessory combines briefly with the ___ ___ to exit via the ___ ___ before separating to join the vagus nerve at the ___ ganglion

Answer 6

spinal root
jugular foramen
inferior

Question 7

at the inferior ganglion, the cranial accessory fibers are carried in the vagus, distrib to the ___ plexus with the external & recurrent laryngeal nerves to contribute to teh motor supply of _____ muscles other than ___

Answer 7

pharyngeal
laryngeal
cricoarytenoid

Question 8

apparent origin of the spinal rootlets

Answer 8

lateral aspect of cervical cord

-bt the anterior posterior rootlets

Question 9

spinal trunk is formed to ascend between the ___ ____ and the ___ ___

Answer 9

denticulate ligaments

posterior rootlets

Question 10

spinal accessory ENTERS the skull thru the

Answer 10

foramen magnum

Question 11

spinal root passes laterally where it combines with the cranial root and EXITS the skull thru the

Answer 11

jugular foramen

Question 12

spinal accessory passes deep to the ____, sending motor fibers to it

Answer 12

SCM

Question 13

spinal accessory traverses the ___ triangle and deep to the ___, where it lends motor supply to the upper and middle portions of the muscle

Answer 13

posterior

trapezius