what stops blood from flowing backwards thrugh the heart
The valves that are present in the heart prevent the blood from flowing backward through the heart. These valves are
What stops blood from flowing backwards through the heart ?
P in the heart have thicker muscular walls than Q do. Also, R ensure that blood does not flow backwards when the atria or ventricles contract. P is ___ Q is ___ and R is ___
Choose the correct order of blood flow from the heart to body and back to the heart.