| 词汇 | semilunar-valve |
| 释义 | semilunar valve noun[ C ] anatomy specializeduk /ˌsem.i.luː.nə ˈvælv/ us /ˌsem.i.luː.nɚ ˈvælv/ one of the valves (= structures that open and close) that stop blood from returning into the ventricles (= lower spaces) of the heart半月瓣 The circulatory system & blood ABO accessory pathway adventitia adventitial ANA auricle bicuspid valve femoral artery gamma globulin glomus granulocyte haematogenous haemic phagocyte portal system precava pulmonary artery pulmonary vein pulmonic tricuspid valve Examples of semilunar valvesemilunar valve It may be difficult to align both cardiac chambers in the same tracing; instead, the cursor can be placed across an atrial wall and a semilunarvalve. Malformations of the semilunar valves produced in chick embryos by mechanical interference with cardiogenesis. The fourth stage, ventricular ejection, is when the ventricles are contracting and emptying, and the semilunar valves are open. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The conus arteriosus has a variable number of semilunar valves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is placed above and to the left of the atrioventricular opening, and is guarded by the pulmonary semilunar valves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its orifice is guarded by the aortic semilunar valves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The aortic and pulmonary semilunar valves separate the left and right ventricle from the aorta and the pulmonary arterty respectively. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The aortic valve and the pulmonary valve are the two semilunar valves of the heart. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This results in the slight increase in aortic pressure caused by the elastic recoil of the semilunar valves and aorta. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These two arteries receive blood from the ventricles and their semilunar valves permit blood to be forced into the arteries, and prevent backflow from the arteries into the ventricles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Flow through both semilunar valves is monophasic in systole. The semilunar valves are directed towards the flow of the lymph and open when the pressure in the first lymphangion is greater than the pressure in the next lymphangion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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