Thursday 30 April 2020
Describe double circulation in mammals
Deoxygenated blood from body tissues (except
lungs); enters the heart via the right auricle; through the venacava; it flows
to the right ventricle; via the tricuspid valve; the right ventricle contracts;
pumping blood; via the semi lunar valves; through the pulmonary artery; to the
lungs for oxygenation; the oxygenated blood from the lungs; flow through the
pulmonary vein; to the left auricle; via the bicuspid valve; to the left
ventricle; the left ventricle contracts; pumping blood via the semi lunar valves;
through the aorta; to the rest of the body tissues;
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