| 释义 |
semilunar valven.（名词）- Either of two valves, one located at the opening of the aorta and the other at the opening of the pulmonary artery, each consisting of three crescent-shaped cusps and serving to prevent blood from flowing back into the ventricles.半月瓣：两种瓣膜的任一种，一种在主动脉的开口处，另一种在肺动脉的开口处，每一种瓣都包括三个新月状的瓣尖，用来防止血液倒流回心室
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