咽缩上肌辅助颚咽的闭锁，而咽上缩肌和咽缩中肌使食物蠕动较容易。
The superior pharyngeal constrictor assists in gaining velopharyngeal closure, while peristaltic movement of food is facilitated by the middle and inferior pharyngeal constrictors.
咽缩上肌辅助颚咽的闭锁，而咽上缩肌和咽缩中肌使食物蠕动较容易。
The superior pharyngeal constrictor assists in gaining velopharyngeal closure, while peristaltic movement of food is facilitated by the middle and inferior pharyngeal constrictors.
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