Blood Circulatory System (3)

Science

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Function of right atrium (1)

Deoxygenated blood from the whole body except the lungs enters the right atrium through the superior and inferior vena cava

Function of right atrium (2)

When the right atrium contract, deoxygenated blood is forced to flow into the chamber below it, namely the right ventricle

Function of tricuspid valve

Allows the flow of blood in only one direction from the right atrium to the right ventricle

Function of right ventricle

When the right ventricle contracts, deoxygenated blood is forced to flow out into the pulmonary artery to be carried to the lungs

Function of semilunar valves

Semilunar valves at the pulmonary artery and aorta ensure that blood flows only in one direction and not back into the ventricles

Function of left atrium (1)

Oxygenated blood from the lungs enters the left atrium through the pulmonary vein

Function of left atrium (2)

When the left atrium contracts, oxygenated blood is forced to flow into the chamber below it, namely the left ventricle

Function of bicuspid valve

Allows the flow of blood in only one direction from the left atrium into the left ventricle

Function of left ventricle

When the left ventricle contracts, oxygenated blood is forced to flow out into the aorta to be carried to all parts of the body except lungs

Structure of right atrium

Has thin muscular wall

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