Blood goes from vena cava into heart chamber {right atrium} {auricle}| {atrium, heart} at heart top right.
Right atrium pumps blood through valve {tricuspid valve}| to right ventricle.
Right atrium pumps blood through tricuspid valve to lower right chamber {right ventricle} {ventricle, heart}|.
Right ventricle pumps blood through valve {semilunar valve}| into pulmonary artery.
Right ventricle pumps blood through semilunar valve into lung artery {pulmonary artery}|.
Blood goes from pulmonary artery to lung capillaries and then to lung vein {pulmonary vein}| back to left atrium.
Left atrium pumps blood through valve {bicuspid valve}| into left ventricle.
Left ventricle pumps blood through valve {mitral valve}| into aorta. Mitral valve gives high and short sound. Other valves and ventricle closures give low and long sound. Heart-sound change indicates valve damage. Syphilis and rheumatic fever weaken heart valves.
4-Zoology-Organ-Circulation-Parts-Heart
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Date Modified: 2022.0225