describe the pathway of blood in the pulmonary and systemic circuit system

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Pulmonary circuit transports deoxygenated blood to the lungs for oxygenation and return back oxygenated blood to the heart.

Blood from right atrium (deoxygenated blood) flows into right ventricle via right atrioventruclar valve (tricuspid valve).
During ventricular contraction, the blood from right ventricle is pumped into pulmonary trunk via pulmonary semilunar valve.
Pulmonyr trunk divides into right and left pulmonary arteries that deliver deoxygenated blood to right and left lungs respectively.
After the exchange of gases between alveoli and pulmonary capillaries, the oxygenated blood is transported back to the heart by pulmonary veins in the left atrium of the heart.

Systemic circuit transports oxygenated blood throughout the body in order to deliver oxygen to body tissues and take carbondioxide rich blood back to the heart.

Blood from left atrium (oxygenated blood) flows into left ventricle via left atrioventruclar valve (bicuspid valve).
During ventricular contraction, the blood from left ventricle is pumped into aorta via aortic semilunar valve.
Aorta divides into smaller systemic arteries that supplies tissues of all the organs with oxygenated blood.
Tissue cells in the body picks up oxygen and release carbondioxide into the systemic capillaries.
Systemic capillaries drain deoxygenated blood into systemic veins.
Superior and inferior vena cava drains the deoxygenated blood from upper and lower body organs respectively into the right atrium of the heart.

Sydney Mullin answered 1 year ago

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