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bicuspid (between left ventricle and atrium) and tricuspid (between right ventricle and atrium) are the 2 valves that prevent the backward flow of blood from the ventricles into the atria. There are two semi-lunar valves also prevent the backward flow of blood from arota to the left ventricle (Aortic valve) and from the Pulmonary Artery to the right ventricle (the Pulmonary valve).
The valves at the top of the heart are the semi lunar vavles. These stop back flow from the pulmonary artire and pulmonary vein (to and from the lungs) The valves that stop back flow in the heart from the atruims to the ventricls are the tricuspid valve (on the right) and the bicuspid valve (on the left) (be carful here, because while the tricuspid valve is a universal term, bicuspid is not used in the USA, it is called something else whic escapes me at the moment) the valve that stops blood coming back into the heart from the aorta (main artery going to body) is the aortic valve and the the valve that stops back flow from the veina cava (main vien going back into the heart from the body) is just veina cava valve.

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14y ago
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15y ago

vaulves in the heart allow the blood through but dont open forward. Like a cat flap loked 1 way. The cat can get in but cant get back out because it only opens 1 way.

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14y ago

Valves between atrium and ventricles prevent the backflow of blood in the heart.

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14y ago

One-way valves between the atria and ventricles, as well as between the ventricles and major arteries prevents blood from flowing backward.

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8y ago

Valves prevent the backflow of blood in the heart. The semilunar valves prevent the backflow from the atria, and AV valves prevent backflow from the ventricles.

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8y ago

The coronary artery.

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15y ago

The four heart valves.

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11y ago

vavle

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Q: What prevents the back flow of blood in the heart?
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Related questions

What prevents the back flow of blood inside heart during contraction?

The valves in the veins


Why do many veins have flap-like valves in them?

It is to allow the blood to flow in one direction - towards the heart, it prevents back flow.


Flow of blood through the hears to the lungs?

The flow of blood from the heart to the lungs and back to the heart is called pulmonary circulation.


What structure prevents blood from backing up?

In the heart/arteries, the Aortic valve prevents blood from flowing backwards. In the systemic veins, eustachean valves prevent the backwards flow of blood.


What is the structure that keeps blood from flowing backwards?

Tiny valves in your veins keep blood from backing up. The pumping force of your heart keeps the blood flowing forward. If a valve in your leg stops working properly, the blood seeping back causes varicose veins mainly in your legs, though can occur anywhere.


What regulates the flow of blood to the heart?

veins are responsible for bringing blood back to the heart.


What makes sure the blood does not go backward?

Blood is a constant whereabout in our bodies. As of such a frequent heartbeat exists within our system. Which causes the blood within our bodies to flow forward, in lamense terms it produces a very large push for the blood to distribute it's nutrients throughout the body and back within our heart and out again. This constant push is what prevents blood from flowing backwards in your veins.


What ensures that the blood does not flow back into the heart?

Semilunar valves


What is the flow of blood from the stomach to the heart and back to the stomach?

it just goes back


What is the pulmonary semi lunar valve?

The pulmonary semilunar valve is a heart valve that separates the right ventricle from the pulmonary artery. It functions to prevent the backflow of blood from the pulmonary artery back into the right ventricle during the heart's pumping cycle.


What is the flow of blood between the heart and lungs called?

The flow of blood from the heart to the lungs and back to the heart is called the pulmonary circulation.The blood flowing from the heart to the lungs would be deoxygenated and blood flowing towards the heart from the lungs would be oxygenated.


What is pulmonary valve?

The pulmonary valve is a semilunar valve that prevents the back flow of blood back from the lungs to the right ventricle.