accessory nerve(redirected from cranial nerve XI)
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Either of the 11th pair of cranial nerves, which convey motor impulses to the pharynx and muscles of the upper thorax, back, and shoulders.
(Anatomy) either one of the eleventh pair of cranial nerves, which supply the muscles of the head, shoulders, larynx, and pharynx and the viscera of the abdomen and thorax
either one of the 11th pair of cranial nerves found only in mammals, composed of motor fibers that function in speech and swallowing.