Upper limb anatomy - Spinal accessory nerve (CN XI)

The spinal accessory nerve is the 11th cranial nerve. So why is it called the spinal accessory nerve? We'll look at its origins (but not the nuclei that it comes from), how it enters and leaves the skull, the route it takes to the neck and the muscles that it innervates. Music by Jahzzar Album: HiFi City Tales Song: Bodies https://soundcloud.com/jahzzar