SPINAL ACCESSORY NERVE DISEASES
\spˈa͡ɪnə͡l ɐksˈɛsəɹˌi nˈɜːv dɪzˈiːzɪz], \spˈaɪnəl ɐksˈɛsəɹˌi nˈɜːv dɪzˈiːzɪz], \s_p_ˈaɪ_n_əl ɐ_k_s_ˈɛ_s_ə_ɹ_ˌi n_ˈɜː_v d_ɪ_z_ˈiː_z_ɪ_z]\
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Diseases of the eleventh cranial (spinal accessory) nerve. This nerve originates from motor neurons in the lower medulla (accessory portion of nerve) and upper spinal cord (spinal portion of nerve). The two components of the nerve join and exit the skull via the jugular foramen, innervating the sternocleidomastoid and trapezius muscles, which become weak or paralyzed if the nerve is injured. The nerve is commonly involved in MOTOR NEURON DISEASE, and may be injured by trauma to the posterior triangle of the neck.
By DataStellar Co., Ltd
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hydromorphic
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