Question

which numbers in the image represent the parts of the heart used to pump blood to the lungs?
a. 5, 6, 7
b. 1, 4, 7
c. 2, 3, 4
d. 4, 5, 6

Explanation:

To pump blood to the lungs, the right side of the heart is involved. The right atrium (2), right ventricle (3), and the pulmonary artery (4) are parts that send deoxygenated blood to the lungs. Let's analyze the options:

• Option A (5,6,7): 5,6,7 are related to the left side (oxygenated blood) or aorta, not lung - pumping.
• Option B (1,4,7): 1 is a vein (inferior vena cava), 7 is aorta, not for lung pumping.
• Option C (2,3,4): 2 (right atrium) receives deoxygenated blood, 3 (right ventricle) pumps it, and 4 (pulmonary artery) carries it to lungs. This matches.
• Option D (4,5,6): 5 and 6 are left atrium and left ventricle (oxygenated blood), not for lung pumping.

Answer:

C. 2, 3, 4