Question

The diagram shows a section through the human heart. Which blood vessels carry blood to and from the lungs?

• A. Blood to lungs - 1, Blood from lungs - 3
• B. Blood to lungs - 1, Blood from lungs - 4
• C. Blood to lungs - 2, Blood from lungs - 3
• D. Blood to lungs - 2, Blood from lungs - 4

Answer 1

The correct option is D Blood to lungs - 2, Blood from lungs - 4

• The labeled portion depicted by the number 2 is the pulmonary artery that carries deoxygenated blood to the lungs from the right ventricle of the heart.
• The labeled portion depicted by the number 4 is the pulmonary vein that returns oxygenated blood to the left atrium of the heart.

Thus the correct answer is option D.