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Q.

State true or false.

Is it true that valves prevent the backflow of blood?

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a

True

b

False

answer is A.

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Detailed Solution

The above given statement is true.
Concept- The heart has four chambers, with two articles and two ventricles. There is a valve present between the atrium and ventricle. Blood has to pass through the valve before leaving the chamber.
When blood pass through the atria to the ventricles in the heart, the valves present between the atria and ventricles get closed so that the blood do not flow back to the atria, therefore it prevents the backflow of blood.
So, it is a right statement.
Hence, option 1 is the correct answer.

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