In humans, which chamber of the heart receives oxygen-rich blood from the lungs first ?

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General Awareness

In humans, which chamber of the heart receives oxygen-rich blood from the lungs first ?

This question was previously asked in

CDS 1 2026 Maths Question Paper (12-Apr-2026)

Left atrium

Right atrium

Left ventricle

Right ventricle

The correct answer is

Left atrium

Heart Chamber Receiving Oxygen-Rich Blood

The path of blood flow through the human heart is crucial for understanding its function. Oxygenated blood returns from the lungs, where it picks up oxygen.

This oxygen-rich blood travels via the pulmonary veins.

The pulmonary veins connect directly to the left atrium.

Therefore, the left atrium is the very first chamber of the heart to receive oxygen-rich blood returning from the lungs.

This blood then moves to the left ventricle before being pumped to the rest of the body.

The right side of the heart handles deoxygenated blood returning from the body and pumping it to the lungs.

Based on this circulatory pathway, the correct option is A.

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