Accessory nerve

This tutorial explores the accessory nerve, the 11th cranial nerve, highlighting its structure, function, and clinical significance. It covers the efferent and afferent fibers, detailing their roles in motor and sensory pathways. The tutorial also discusses the cranial and spinal parts of the nerve, their pathways, and the muscles they innervate, such as the sternocleidomastoid and trapezius. Clinical notes on nerve lesions and their effects on muscle function are also provided.

What types of sensory stimuli do afferent fibers carry towards the central nervous system?

What are the two parts of the accessory nerve?

Where does the cranial part of the accessory nerve arise from?

What is the role of the nucleus ambiguous in relation to the accessory nerve?