Question

How is the UNIDIRECTIONAL flow of blood in heart regulated?




plz HURRY​

Answer 1

Answer:

As the heart pumps blood,a series of valves open and close tightly.These valves ensure that blood flows in only one direction, preventing back flow.unidirectional flow enables natural selection to take advantage of the heart as a pump of air.

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Answer 2

Answer:

It's regulated in the following way:

Explanation:

• Blood in the heart is unidirectional because the heart contains various valves to prevent the backflow of blood.
• The tricuspid valve between the right atrium and right ventricle prevents blood from flowing back to the  right side of the heart.
• The bicuspid valve between the left atrium and the left ventricle prevents blood from flowing back to the  left side of the heart.
• The crescent-shaped valve is located between the left ventricle and the aorta: right ventricle and pulmonary veins to prevent the backflow of blood from outside the heart.
• The heart pumps blood at high pressure so it flows in one direction.

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