The Circumcised Penis
Urethral Opening: Located at the end of the penis. It is the end of the tube through which urine from the bladder and semen from the ejaculatory ducts leaves the body. The inside of the urethra has spiral grooves that make urine flow in a narrow stream.
Glans: Also called the "head" of the penis. The glans is the acorn-shaped structure at the end of the penis. It is well endowed with nerve endings and is very sensitive to touch.
Frenulum: The small piece of skin that runs between the glans and shaft of the penis on the underside of the penis. The frenulum is very sensitive to stimulation.
Shaft: Made up of three parts. There are two corpora cavernosa on the top of the penis and this causes the first phases of penile erection when they fill with blood during early sexual arousal. The corpus spongiosum runs along the bottom side of the penis and encircles the urethra. This spongy body fills with blood as the erection continues to develop. It can be seen as a raised column on the lower side of the penis and it also fills the glans of the penis.
Base: The base or bulb of the penis is a rounded mass of tissue at the end of the corpus spongiosum.
Scrotum: The external sac of skin that encloses the testes, epididymis, and the lower portion of the spermatic cords.
Foreskin: The loose skin covering the head of the penis of uncircumcised men when the penis is flaccid. It pulls back when a man becomes aroused and the penis becomes erect.
Added 10/21/2007