Thpulmonary capillaries
A) are closely associated with alveoli but do not fuse.
B) fuse with the alveoli to facilitate gas exchange.
C) bring oxygenated blood back to the heart.
D) bring deoxygenated blood back to the heart.
E) fuse with the alveoli to facilitate gas exchange, and bring oxygenated blood back to the heart.
Correct Answer:
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