accessory nerve
noun
: either of a pair of motor nerves that are the 11th cranial nerves of higher vertebrates, arise from the medulla oblongata and the upper part of the spinal cord, and supply chiefly the pharynx and muscles of the upper chest, back, and shoulders
Word History
First Known Use
1682, in the meaning defined above
Medical Definition
accessory nerve
noun
: either of a pair of motor nerves that are the 11th cranial nerves, arise from the medulla and the upper part of the spinal cord, and supply chiefly the pharynx and muscles of the upper chest, back, and shoulders
called also accessorius, accessory, spinal accessory nerve