SAT Subject Biology Practice Question 403: Answer and Explanation

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Question: 403

13.

Which structure returns blood poor in oxygen to the heart?

A. 1
B. 2
C. 3
D. 4
E. 5

Correct Answer: C

Explanation:

C As mentioned in Question 32 above, blood is returned to the heart through the super-ior and inferior vena cavae. The superior vena cava in this diagram is labeled "3."

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