本文首先复习了吞咽运动的机制。指出舌在吞咽运动中所担负的任务主要是两方面:当食物进入口腔中在吞咽之前必须放在舌背上,换言之,舌的第一个作用是作为食物的输送器。第二个亦即是最重要的作用乃是作为口腔的一个闭塞器。因为有效的消灭 This article first reviewed the mechanism of swallowing. Pointed out that the task of the tongue in the swallowing movement are mainly two aspects: When the food enters the oral cavity must be placed on the tongue back before swallowing, in other words, the first role of the tongue as food conveyor. The second, and most important, function is to act as an occluder in the mouth. Because of the effective elimination