The
human penis is an external
sexual organ of
male humans. It is a
reproductive,
intromittent organ that additionally serves as the
urinal duct.
Human anatomy
Parts
- Root of the penis (radix): It is the attached part, consisting of the bulb of penis in the middle and the crus of penis, one on either side of the bulb. It lies within the superficial perineal pouch.
- Body of the penis (corpus): It has two surfaces: dorsal (posterosuperior in the erect penis), and ventral or urethral (facing downwards and backwards in the flaccid penis). The ventral surface is marked by a grove in a lateral direction.
Structure
The human penis is made up of three columns of
tissue: two
corpora cavernosa lie next to each other on the
dorsal side and one
corpus spongiosum lies between them on the
ventral side.
The enlarged and bulbous-shaped end of the corpus spongiosum forms the
glans penis, which supports the
foreskin, or prepuce, a loose fold of skin that in adults can retract to expose the glans. The area on the underside of the penis, where the foreskin is attached, is called the
frenum, or frenulum. The rounded base of the glans is called the
corona. The
perineal raphe is the noticeable line along the underside of the penis.
The
urethra, which is the last part of the
urinary tract, traverses the corpus spongiosum, and its opening, known as the
meatus (), lies on the tip of the glans penis. It is a passage both for
urine and for the
ejaculation of
semen.
Sperm are produced in the...
Read More