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Definitions:
Noun
accessory nerve
spinal accessory
nervus accessorius
eleventh cranial nerve
Definition: arises from two sets of roots (cranial and spinal) that unite to form the nerve
Definition: Either of a pair of motor nerves that are the 11th cranial nerve of higher vertebrates, arise from the medulla oblongata and the upper part of the spinal cord, controlling the pharynx and the muscles of the upper chest, back and shoulders.