0 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 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.
Flow through both semilunar valves is monophasic in systole.
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.
This results in the slight increase in aortic pressure caused by the elastic recoil of the semilunar valves and aorta.
The aortic valve and the pulmonary valve are the two semilunar valves of the heart.
The aortic and pulmonary semilunar valves separate the left and right ventricle from the aorta and the pulmonary arterty respectively.
Its orifice is guarded by the aortic semilunar valves.
It is placed above and to the left of the atrioventricular opening, and is guarded by the pulmonary semilunar valves.
