Question

how is the back flow of blood from ventricles to atriaprevented​

Answer 1

Answer:

There are two atrioventricular valves, Mitral(Bicuspid valve) and Tricuspid valve. These valves maintain the flow of blood from atrium to ventricle and do not allow the backflow of blood from ventricles to atrium.

So, the correct answer is 'The right ventricle into the right atrium'.

Explanation:

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Answer 2

Answer:

Here's how back flow of blood from ventricles to atria is prevented.

Explanation:

Valves open or close based on pressure differences across the valve.

The atrioventricular (AV) valves separate the atria from the ventricles on each side of the heart and prevent backflow of blood from the ventricles into the atria during systole.

Hope it helps.