[6] Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation with the sympathetic division in the autonomic nervous process causes constriction in the penile arteries and cavernosal sinosoids, forcing blood out on the erectile tissue by using erection-related veins which contain 1 deep dorsal vein, a pair of cavernosal veins, https://biggererections92397.wizzardsblog.com/26885842/top-latest-five-bigger-erections-urban-news