[Variations of the constrictor pharyngeal muscles in humans].
[Variations of the constrictor pharyngeal muscles in humans].
复制标题
[人类咽缩肌的变化]。
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
K. Kishi
中科院分区：
文献类型：
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作者：
K. Murakami;M. Kuroda;K. Kishi
在立体显微镜下解剖了10具非随机人类身体的15半，以检查咽缩肌是否存在变异。3例患者有明显的缩窄肌变异。结果如下：1.变异1例，上缩肌由翼颌中缝发出，汇入中、下缩肌的外表面。该肌由迷走神经咽支的上部供应。2.在第2例中，下缩肌的肌束起源于甲状软骨，向上穿行，与来自翼下颌缝的上缩肌外表面的肌纤维相连。其中一些肌纤维延伸至咽-基底筋膜后部表面。该肌由迷走神经咽支的下部支配。3.上缩肌下部位于茎咽肌和舌咽神经之间，横行于茎突后间隙的内外颈动脉之间，到达下颌下三角周围的颈筋膜。该异常上缩肌肌束由舌咽神经颈动脉支和迷走神经咽支中段支配。
Fifteen halves of ten nonrandomized human cadavers were dissected under a stereoscopic microscope in order to examine the existence of variations in the constrictor pharyngeal muscles. Obvious variations of the constrictor muscles were found in three cases. The results are summarized as follows: 1. In the first case of variations, the superior constrictors arose from the pterygomandibular raphe and merged into the outer surfaces of the middle and inferior constrictors. This muscle was supplied by the upper part of the pharyngeal branches of the vagus. 2. In the second case, the muscle bundle of inferior constrictors originated from the thyroid cartilage and passed upward, joining the muscular fibers of the outer surface of the superior constrictors arising from the pterygomandibular raphe. Some of these muscular fibers extended to the surface of the posterior part of the pharyngobasilar fascia. This muscle was innervated by the lower part of the pharyngeal branches of the vagus. 3. In the third case, the lower part of the superior constrictors passed laterally between the stylopharyngeus and the glossopharyngeal nerve, running between the external and internal carotids in the retrostyloid space and reaching the cervical fascia around the submandibular triangle. This anomalous muscular bundle of superior constrictors was innervated by the carotid branch of the glossopharyngeal nerve and the middle part of the pharyngeal branches of the vagus.