Question

what is valve of heart?

Answer 1

✴⚫⛤✔☛heart valves are remarkable structures. ... The heart has 4 valves: The mitral valve and tricuspid valve, which control blood flow from the atria to the ventricles. The aortic valve and pulmonary valve, which control blood flow out of the ventricles
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⚫✴⛤☞The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the between the atria (upper heart chambers) and the ventricles (lower heart chambers).✴✴✴✴✴✴✴✴✴✴✴✴⛤⛤⛤⛤⛤⛤⛤⛤⛤HOPE THIS WILL HELPS U FRND ☞☺☺^_^...

Answer 2

Human heart valves are remarkable structures.
These tissue-paper thin membranes attached to the heart wall constantly open and close to regulate blood flow (causing the sound of a heartbeat). This flexing of the tissue occurs day after day, year after year. In fact, the tissue withstands about 80 million beats a year, or 5 to 6 billion beats in an average lifetime. Each beat is an amazing display of strength and flexibility.