Cell Signalling and Transduction
In vasodilation, proper nerve signals sent to blood vessels cause

All of these
relaxation of smooth muscle cells
reduced blood pressure
the release of nitric oxide from endothelial cells

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Cell Signalling and Transduction
Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*?

Because nitric oxide breaks down quickly and thus cannot travel far
None of these
Because nitric oxide cannot cross cell membranes and enter the blood
Because other body tissues use a different signaling molecule

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