What are valves ???
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Answer:
Valves are flap-like structures present in heart that allow blood to flow in one direction.
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this is definition of valves in heart!
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Answer:
A valve is a device or natural object that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category.
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