Pulmonary arteries are wider than systemic arteries. Therefore, pulmonary circuit blood pressure is
A. high and blood flows very slowly through pulmonary capillaries, maximizing gas exchange.
B. low and blood flows very slowly through pulmonary capillaries, maximizing gas exchange.
C. high and blood flows very rapidly through pulmonary capillaries, maximizing gas exchange.
D. low and blood flows very rapidly through pulmonary capillaries, maximizing gas exchange.
Answer: B
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