Adrenergic nerve fibers and receptors are existing in the cavernous trabeculae, and they encompass the deep penile arteries. Noradrenaline is the most important neurotransmitter that controls penile flaccidity and tumescence. [thirteen, 14] Sympathetic contraction is considered mediated by activation of postsynaptic alpha(one)-adrenergic receptors that improve intracellular calcium am... https://protesthetic-toys.com/