CN XI (ACCESSORY)-C. COURSE
From NeuroRehab.wiki
SUMMARY
1. CN XI lies dorsal to the vagus in the jugular foramen, behind the jugular tubercle.
2. Outside the skull, the cranial fibers pass to the vagus: motor to pharynx, larynx, oesophagus & soft palate.
3. Neck: lies on the IJV over the lateral mass of C1 and passes into the SCM (which it supplies).
4. Posterior triangle: lies over the levator scapulae, behind the scalene muscles).
5. Then passes under the trapezius (which it supplies).
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone. Get it on Amazon.
Drake, Richard L., et al. Gray's Anatomy for Students. Elsevier, 2023. Get it on Amazon.
