Question

what we call to the struture which maintains undirectional flow of blood ?​

Answer 1

THE ANSWER IS:-

These openings are called valves because they open in one direction like trapdoors to let the blood pass through. Then they close, so the blood cannot flow backwards into the atria. With this system, blood always flows in only one direction inside the heart.

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Answer 2

Answer:

Heart Valves

Explanation:

Four valves maintain the unidirectional flow of bloodthrough the heart. The valves are located between the atria and ventricles and in the two arteries that empty blood from the ventricles