Nahm I, Watanabe H, Maeyama T, Morikawa I, Shin T
Department of Otolaryngology, Saga Medical School, Japan.
Auris Nasus Larynx. 1989;16(2):117-26. doi: 10.1016/s0385-8146(89)80043-4.
The distribution of motoneurons in the brain stem innervating the laryngeal muscles cricothyroid, posterior cricoarytenoid, and thyroarytenoid-lateral cricoarytenoid in the adult guinea pig was investigated. Horseradish peroxidase was injected into individual muscles or applied to the cut end of the superior laryngeal nerve and the recurrent laryngeal nerve. The laryngeal motoneuron pool of guinea pig is divided into two separate areas: the rostral retrofacial nucleus and the caudal nucleus ambiguus. Superior laryngeal and cricothyroid motoneurons were present only in the retrofacial nucleus, while recurrent laryngeal motoneurons were present in both the nucleus ambiguus and the retrofacial nucleus. Posterior cricoarytenoid motoneurons were located in the rostral and ventrolateral part of the recurrent laryngeal motoneuron pool in the nucleus ambiguus. The thyroarytenoid-lateral cricoarytenoid motoneurons partially overlapped the posterior cricoarytenoid pool and extended more dorsomedially and caudally in the nucleus. Our findings on the distribution of perikarya in the laryngeal motoneuron of the guinea pig are essentially the same as those of other mammals.
研究了成年豚鼠中支配喉肌（环甲肌、环杓后肌和甲杓肌-环杓侧肌）的脑干运动神经元的分布。将辣根过氧化物酶注入单个肌肉，或应用于喉上神经和喉返神经的切断端。豚鼠的喉运动神经元池分为两个独立区域：吻侧面神经后核和尾侧疑核。喉上神经和环甲肌运动神经元仅存在于面神经后核中，而喉返神经运动神经元则存在于疑核和面神经后核中。环杓后肌运动神经元位于疑核中喉返神经运动神经元池的吻侧和腹外侧部分。甲杓肌-环杓侧肌运动神经元部分与环杓后肌运动神经元池重叠，并在疑核中向背内侧和尾侧延伸得更远。我们关于豚鼠喉运动神经元中胞体分布的研究结果与其他哺乳动物的基本相同。
