4 concepts
Heart Circulation
Coronary circulation is the circulation of blood in the blood vessels of the heart.
Operation of Atrioventricular Valves
The atrioventricular valves separate the atria from the ventricles and prevent backflow from the ventricles into the atria during systole.
Operation of Semilunar Valves
The semilunar valves allow blood to be pumped into the major arteries, but prevent backflow of blood from the arteries into the ventricles.
Systemic and Pulmonary Circulation
The cardiovascular system has two distinct circulatory paths, pulmonary circulation and systemic circulation.