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skos:definition |
MSH: The 11th cranial nerve. The accessory nerve originates from neurons in the medulla and in the cervical spinal cord. It has a cranial root, which joins the vagus (10th cranial) nerve and sends motor fibers to the muscles of the larynx, and a spinal root, which sends motor fibers to the trapezius and the sternocleidomastoid muscles.,NCI: The 11th cranial nerve, which sends motor impulses to the muscles of the upper thorax, back, shoulders, and pharynx.
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