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1. |
Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*? |
A. | Because other body tissues use a different signaling molecule |
B. | Because nitric oxide cannot cross cell membranes and enter the blood |
C. | Because nitric oxide breaks down quickly and thus cannot travel far |
D. | None of the above |
Answer» D. None of the above | |