SAT Subject Biology Practice Question 57: Answer and Explanation

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Question: 57

1. Which of these carries deoxygenated blood?

I. Pulmonary veins

II. Anterior vena cava

III. Pulmonary arteries

A. I only
B. II only
C. III only
D. I and II
E. II and III

Correct Answer: E

Explanation:

The anterior and posterior venae cavae return blood to the heart after it has traveled to the tissues of the body. Because the blood has supplied oxygen to cells, it is deoxygenated. The heart pumps this deoxygenated blood to the lungs through the pulmonary arteries. It picks up oxygen and returns to the heart via the pulmonary veins.

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