XI Accessory

Question 1

origin & level of accessory nerve

Answer 1

nucleus ambiguus & disperse cell bodies (medulla & cervical segments)

Question 1

where does accessory nerve exit the brain?

Answer 1

post-olivary sulcus

Question 2

branches of accessory nerve

Answer 2

splits into cranial & spinal root

Question 3

function of cranial accessory nerve

Answer 3

joins vagus to supply muscles of pharynx, larynx & soft palate

Question 4

function of spinal accessory nerve

Answer 4

motor to SCM and trapezius mm

Question 5

lesion of accessory nerve

Answer 5

inability to rotate head to opposite side and shrug shoulders

Question 6

CN IX, X, and XI exit the skull via the ____

Answer 6

jugular foramen