Question

what stop the back flow of blood​

Answer 1

Answer:

The tricuspid and mitral valves lie between the atria and ventricles. The aortic and pulmonic valves lie between the ventricles and the major blood vessels leaving the heart. The heart valves work the same way as one-way valves in the plumbing of your home. They prevent blood from flowing in the wrong direction. ....

so valves at site of atria and ventricle know as tricuspid and semilunar valve of aorta stops the back flow of blood

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