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During intimate arousal, element oxide (NO)
is discharged from mettle terminals and endothelial cells in the principal sum cavernosum.

NO activates guanylate cyclase to change deoxyguanosine
triphosphate (GTP) into cycle guanosine monophosphate (cGMP),
triggering a cGMP-subordinate cascade of events. The accretion of cGMP leads to smooth-brawn liberalization in the principal sum cavernosum and increased pedigree stream to the
penis. http://lm360.us/