The motor nerve supply of the velopharyngeal muscles.
The motor nerve supply of the velopharyngeal muscles.
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DOI：
10.1097/00006534-197705000-00087
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发表时间：
1977-05
期刊：
影响因子：
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通讯作者：
J. Nishio;T. Matsuya;J. Machida;T. Miyazaki
中科院分区：
文献类型：
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作者：
J. Nishio;T. Matsuya;J. Machida;T. Miyazaki
本研究试图阐明咽肌的运动神经供应。实验在20只麻醉恒河猴上进行。通过刺激颅骨内的颅神经，分析了腭帆提肌、悬雍垂和上级咽缩肌的诱发EMG反应，这些肌似乎有助于咽闭合。结果如下：1.刺激颞骨岩部区域的面神经、舌咽神经和迷走神经时，可以识别所选肌肉的肌肉动作电位（M波），但刺激副神经时未观察到。2.在最大刺激下，迷走神经比其他神经的肌肉振幅增加更大。其次是舌咽神经，面神经产生的幅度增加最少。3.此外，在最大的刺激，lavidine在腭帆提肌和悬雍垂肌肉的反应减少到最大程度的刺激迷走神经，在较小程度上的舌咽，至少为面神经。4.刺激茎乳孔以下的面神经，M波不能识别。从目前的研究中，它的结论是，腭帆提肌，悬雍垂，和上级缩咽肌的双重神经支配的面神经和分支的咽丛来自舌咽和迷走神经，面神经起着重要的作用，作为一个运动神经负责咽闭合。
The present study attempted to clarify the motor nerve supply of the velopharyngeal muscles. Experiments were carried out on 20 anesthetized rhesus monkeys. Evoked EMG responses of the levator veli palatini, uvula, and superior constrictor pharyngeus muscles, which seem to contribute to velopharyngeal closure, were analyzed by stimulating the cranial nerves within the skull. Results were as follows: 1. Muscle action potentials (M-waves) from the selected muscles could be recognized on stimulating the facial, glossopharyngeal, and vagus nerves at the petrosal area of the temporal bone but were not noted upon accessory nerve stimulation. 2. At maximal stimulation, the vagus gave a greater increase in muscle amplitude than the other nerves studied. This was followed by the glossopharyngeal with the facial nerve producing the least increase in amplitude. 3. Also at maximal stimulation, latencies in the response of the levator veli palatini and uvula muscles were reduced to the greatest degree by stimulation of the vagus, to a lesser extent for the glossopharyngeal, and least for the facial nerve. 4. On stimulating the facial nerve below the stylomastoid foramen, M-waves could not be recognized. From the present study, it was concluded that the levator veli palatini, uvula, and superior constrictor pharyngeus muscles are double innervated by the facial nerve and branches of the pharyngeal plexus derived from the glossopharyngeal and vagus nerves and that the facial nerve plays an important role as one of the motor nerves in movements responsible for velopharyngeal closure.