CN XII (Hypoglossal) Flashcards
1
Q
CN XII is what type of N?
A
Motor (GSE fibers)
2
Q
What are supplied by hypoglossal N?
A
All intrinsic and extrinsic muscles of tongue
3
Q
What is not innervated by hypoglossal N?
A
Palatoglossus: innervated by pharyngeal plexus of vagus
4
Q
The nerve begins as rootlets found in groove between what?
A
Pyramid and olive in medulla
5
Q
CN XII exits the skull via what?
A
Hypoglossal foramen located in occipital bone
6
Q
CN XII descends passing between what?
A
Internal carotid A and Internal jugular V
7
Q
It then loops upwards and forwards crossing what?
A
Hyoglossus muscle to enter tongue from below
