Question

In the above diagram, the blood vessel pointed ‘X’ communicates with ______________ and carries ______________ blood.

• A. right atrium, deoxygenated
• B. right ventricle, oxygenated
• C. left atrium, deoxygenated
• D. left ventricle, oxygenated

Hint:

All veins except pulmonary vein carry deoxygenated blood to the heart.

Answer 1

The Correct Option is A

Step 1: Observing the diagram.
The labelled vessel ‘X’ represents the superior vena cava or inferior vena cava, which brings blood back to the heart.
Step 2: Direction of blood flow.
Venae cavae collect blood from different parts of the body and open into the right atrium of the heart.
Step 3: Nature of blood.
The blood returning from body tissues is deoxygenated as oxygen has already been supplied to cells.
Step 4: Conclusion.
Hence, the vessel communicates with the right atrium and carries deoxygenated blood.