The chamber(s) of the heart that receives blood first in the cardiac cycle is:

Atrium

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Ventricle

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Vena cava

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None of these

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Solution

The correct option is A
Atrium

Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, called the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, transferring the blood to the relaxed left ventricle.

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Q. The heart chamber that receives oxygenated blood from lungs.

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The chamber(s) of the heart that receives blood first in the cardiac cycle is:

The correct option is A Atrium Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, called the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, transferring the blood to the relaxed left ventricle.

The correct option is A
Atrium

Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, called the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, transferring the blood to the relaxed left ventricle.