How do veins prevent back flow of blood?

The pressure exerted by the heart pushes the blood back

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The valves in the veins prevent back flow of blood

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The suction in the heart pulls up the blood

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The stroke volume increases and pushes the blood back

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Solution

The correct option is B The valves in the veins prevent back flow of blood
The valves in the veins are unidirectional. They allow blood flow in only one direction and hence they prevent blood from flowing back.

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Similar questions

How do veins prevent back flow?

Veins have valves to prevent the backflow of blood because the blood in veins flow ________.

Due to presence of _______ , back flow of blood is prevented in veins.

Q. prevents back flow of blood from left ventricle to left atrium.

varicose veins occur when veins are unable to prevent backward flow of blood in places where high blood pressure occurs such as in the feet. this causes swelling of the veins and can be very painful. malfunctioning of which structural part of the veins lead to this condition?

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How do veins prevent back flow of blood?

The correct option is B The valves in the veins prevent back flow of bloodThe valves in the veins are unidirectional. They allow blood flow in only one direction and hence they prevent blood from flowing back.

The correct option is B The valves in the veins prevent back flow of blood
The valves in the veins are unidirectional. They allow blood flow in only one direction and hence they prevent blood from flowing back.