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
Which of the following is true about a hydrophilic signaling molecule?

Its receptor is located in the cytosol of the target cell
It is a steroid
Since it can enter the cell, it directly affects some specific cell process
It might trigger a signal cascade that causes some effect in a cell

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Cell Signalling and Transduction
If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

Smooth muscle cells could not be made to relax
It would be more difficult to increase blood flow and reduce blood pressure
All of these
Nitric oxide would no longer be produced

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