unit 4: CN XII, hypoglossal

Question 1

the hypoglossal is exclusively MOTOR that supplies the:

Answer 1

intrinsic & extrinsic tongue muscles

-NOT palatoglossus

Question 2

hypoglossal nucleus of origin

Answer 2

nucleus of the hypoglossal nerve

Question 3

nucleus of the hypoglossal nerve is located where

Answer 3

floor of the rhomboid fossa

Question 4

apparent origin of the hypoglossal nerve, as it emerges as a series of rootlets that combine into 2 bundles

Answer 4

bt the pyramid and olive of the MO

Question 5

hypoglossal bundles exit skull through the ___ ___ separately, and combine upon exiting the canal

Answer 5

hypoglossal canal

Question 6

after descending, the hypoglossal nerve forms this in order to reach the base of the tongue, where the terminal branches supply the muscles of the tongue

Answer 6

arch of the hypoglossal nerve

Question 7

some of the 1st and 2nd cervical nerves travel WITH the hypoglossal before separating to form the:

Answer 7

superior root of the ansa cervicalis

Question 8

some cervical fibers continue with the hypoglossal to ultimately supply these two muscles

Answer 8

geniohyoid

thyrohyoid

Question 9

lingual branches off the hypoglossal supply these three muscles

Answer 9

hypoglossus
genioglossus
styloglossus