The physiological study on the expression mechanism of pharyngeal peristaltic waves

咽期发生在延髓控制的吞咽反射上的绝对标准尚未确立。咽蠕动波的表达机制尚未明确，但咽蠕动波不断出现是吞咽反射。因此，认为咽蠕动波可以作为咽期发病的绝对标准。消化道的蠕动运动是纵肌和圆肌的协调运动。同样，咽蠕动运动被认为是咽纵肌和咽收缩肌的协调运动。我们用吞咽运动的显像分析了咽部抬高和收缩的关系。结果表明，该系列运动具有较高的重现性。我们认为咽部的抬高运动可能参与咽部蠕动波的表达。

The absolute standard of the onset of pharyngeal stage on swallowing reflex controlled by medulla oblongata, is not established. The expression mechanism of the pharyngeal peristaltic wave has not been clarified, but this wave constantly appears for swallowing reflex. Therefore, it is considered that the pharyngeal peristaltic wave can be the absolute standard of the onset of the pharyngeal stage. The peristaltic movement of alimentary canal is coordinated movements of longitudinal muscle and circular muscle. Similarly, it is considered that the pharyngeal peristaltic movement is coordinated movements of pharyngeal longitudinal muscles and pharyngeal constrictor muscles. We analyzed relationship of elevation and constriction of pharynx with video-fluorography of the swallowing motion. The result revealed that the movement of series had high reproducibility. We suggest that the elevation movement of pharynx may be involved in the expression of the pharyngeal peristaltic wave.