1.CORONARY ARTERY DISEASE Your Heart and How it Works Make a fist. Your heart is about this size. It is located in the center of your chest, and its function is to pump blood,…
The Heartbeat Cardiac cycle = contractions and relaxations of heart muscles in a complete heartbeat Takes ~0.8 s 4 Valves Atrioventricular (AV) valves -are tricuspid valve…