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

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

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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 other body tissues use a different signaling molecule
Because nitric oxide cannot cross cell membranes and enter the blood

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