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NBME 23 Answers

nbme23/Block 4/Question#13

A 65-year-old man comes to the physician because of ...

Smooth muscle cells of the deep artery

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submitted by lfsuarez(114),

The patient is prescribed Sildenafil which caused increased cGMP levels are therefore SMOOTH MUSCLE relaxation. In this case you would want to vasodilate the deep artery to increase blood flow into the corpora cavernosa.

sugaplum  aka cavernous artery, that is what I was looking for. Did not realize it was also called the deep artery +3  

I got thrown off thinking about nitric oxide synthesis occurring in the endothelial cells and NO diffusing to nearby smooth muscle cells. This does occur, though the cGMP the question asks about is a downstream effect of the NO in the smooth muscle cell.