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       (PATH "gifs/Syllabus Chapters/Brainstem Cranial Nerves/nuc11.gif"))
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(FRAME-INFO (STRING "Spinal Cord, Computer Reconstruction. This reconstruction shows the formation of the accessory nerve \(XI\). The accessory nerve provides the motor innervation to the sternocleidomastoid and trapezius muscles. The motor nucleus is situated in the lateral part of the anterior horn of the upper five or six cervical segments. The rootlets ascend through the foramen magnum, then loop back out of the skull via the jugular foramen. A cranial root of the accessory nerve is described in some texts; this root originates from the nucleus ambiguus and travels with the vagus nerve."))
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