Atrioventricular and semilunar valves physiology

This is an amazing video to understand the functioning of valves of heart in five-minutes. Location, function and dangers to valves are discussed briefly. Timeline 0:00 Introduction 0:11 Contents 0:39 Basics of heart anatomy 1:21 Atrioventricular valves 3:00 danger for av valves 4:36 Semilunar valve