Question

why does the heart need valves

Answer 1

here goes ur answer my dear friend.
Human heart valves are remarkable structures. ... The mitral valve and tricuspid valve, which control blood flow from the atria to the ventricles. The aortic valve and pulmonary valve, which control blood flow out of the ventricles.
hope it helps you.
jst chillax

Answer 2

mark me brainlist please