Pressures in the pulmonary circulation are lower than those in the systemic circulation because of what characteristic of the pulmonary circulation?
a. Higher resistance than the systemic circu-lation
b. Less blood flow than the systemic circula-tion
c. Lower resistance than the systemic circu-lation
d. More blood flow than the systemic circu-lation
ANS: C
While the entire cardiac output passes through both pulmonary and systemic circuits, the pulmo-nary circulation offers much lower resistance and, as a result, has a much lower blood pressure.
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