CN XI: Spinal Accessory Nerve Flashcards
1
Q
Emerges from?
A
medulla, behind olive
2
Q
Exits through?
A
jugular foramen
3
Q
Unique thing about CN XI?
A
not TRUE cranial nerve - originates outside of skull
4
Q
Motor function?
A
- trapezius
- sternocleidomastoid
5
Q
Test?
A
- weakness in shoulder shrug (ipsilateral trapezius)
- weakness is turning head (contralateral SCM)
