TWELFTH CRANIAL NERVE DISORDER
\twˈɛlfθ kɹˈe͡ɪnɪəl nˈɜːv dɪsˈɔːdə], \twˈɛlfθ kɹˈeɪnɪəl nˈɜːv dɪsˈɔːdə], \t_w_ˈɛ_l_f_θ k_ɹ_ˈeɪ_n_ɪ__ə_l n_ˈɜː_v d_ɪ_s_ˈɔː_d_ə]\
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Diseases of the twelfth cranial (hypoglossal) nerve or nuclei. The nuclei and fascicles of the nerve are located in the medulla, and the nerve exits the skull via the hypoglossal foramen and innervates the muscles of the tongue. Lower brain stem diseases, including ischemia and MOTOR NEURON DISEASES may affect the nuclei or nerve fascicles. The nerve may also be injured by diseases of the posterior fossa or skull base. Clinical manifestations include unilateral weakness of tongue musculature and lingual dysarthria, with deviation of the tongue towards the side of weakness upon attempted protrusion.
By DataStellar Co., Ltd
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