LECTURE 1 - PART 3 PRESSURE GRADIENTS AND NORMAL HEART SOUNDS
1) What valvular actions make the S1 heart sound? What makes the S2 heart sound?
2) Why do the valves normally only open in one sense and even if subject to pressure they don't flop back on themselves?
2) Why do the valves normally only open in one sense and even if subject to pressure they don't flop back on themselves?
