please let me know more about valves.
Asked by cooltuktuk16 | 16th Sep, 2010, 12:00: AM
A heart valve normally allows blood to flow through it in only one direction. There are four in a mammalian heart and they determine the pathway of blood flow through the heart. A heart valve opens or closes depending on the different pressures on each side of it.
Each valve has a set of flaps (or cusps). When working properly, the heart valves open and close fully.
Answered by | 17th Sep, 2010, 09:51: AM
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