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| 主动脉瓣 (由左、右、后瓣3个半月形瓣叶构成，附着于主动脉环。每个瓣叶与主动脉壁围成主动脉窦。左心室收缩时，主动脉瓣开放,左心室的血液射入主动脉。左心室舒张时,主动脉瓣关闭，防止主动脉内的血液返流入左心室) | |||
| 主动脉瓣 | |||
| Aortic Valve: 9 phrases in 2 subjects |
| Nursing | 4 |
| Surgery | 5 |
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