The helicine arteries then fill the corpora cavernosa, compressing the venous outflow with the penis. This process is known as the veno-occlusive system and it outcomes with penile erection. Conversely, the inhibitory sympathetic stimuli bring about the ejaculation when the essential volume of sexual pleasure has long been arrived at. https://beaux34k5.blogminds.com/the-basic-principles-of-penis-32490550