How the heart pumps blood:
Blood enters into the atrium. High pressure opens the valve squeezing the blood into the venticle and into the arteries and around the body.
The Cardiac Cycle:
Firstly the sinatrial node (SAN found in right atrium) produces electrical impulses which spread quickly across the two atria, which then contract. This force opens the atrioventricular valves (valves found between the atrium and ventricle) and pushes blood into the ventricles. Muscle fibres called atrioventricular node conduct the impulse to purkyne fibres…