body sexual intercourse ref name aph root consists expanded ends cavernous bodies fan form crura attach pubic bone expanded end spongy body ref name lae ref bulb penis surrounded bulbospongiosus muscle corpora cavernosa surrounded ischiocavernosus muscles ref name cwwu ref aid urination ejaculation ref name faftbs ref penis foreskin typically covers glans sometimes removed circumcision medical religious cultural reasons scrotum testicles held away body one
Social science Sociology Sexology Human sexuality