Accessory XI nerve nucleus

The spinal accessory nucleus lies within the cervical spinal cord (C1-C5) in the ventral horn. The nucleus ambiguus is classically said to provide the 'cranial component' of the accessory nerve. However, the very existence of this cranial component has been recently questioned and seen as contributing exclusively to the vagus nerve. The terminology continues to be used in describing both human anatomy, and that of other animals.

Aliases

Accessory neural nucleus
Accessory nucleus of anterior column of spinal cord
Nucleus accessorius columnae anterioris medullae spinalis
Nucleus nervi accessorii
Nucleus of accessory nerve
Nucleus of the accessory nerve
Nucleus of the spinal accessory nerve
Spinal accessory nucleus