Quote:
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Originally Posted by lotus4s
WTH is a peins?  |
Typo...Look Between your legs ..spelling nazi
The human penis is made up of three columns of
tissue:
The corpus spongiosum lies on the underside (known also as the
ventral side) of the penis; the two corpora cavernosa lie next to each other on the upper side (
dorsal side).
The end of the corpus spongiosum is enlarged and bulbous-shaped and forms the
glans penis. The glans 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
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 both a passage for
urine and for the
ejaculation of
semen.
Sperm is produced in the
testes and stored in the attached
epididymis. During ejaculation, sperm are propelled up the
vas deferens, two ducts that pass over and behind the bladder. Fluids are added by the
seminal vesicles and the vas deferens turns into the
ejaculatory ducts which join the urethra inside the
prostate gland. The prostate as well as the
bulbourethral glands add further secretions, and the semen is expelled through the penis.
The
raphe is the visible ridge between the
lateral halves of the penis, found on the ventral or underside of the penis, running from the meatus (opening of the urethra) across the scrotum to the
perineum (area between scrotum and anus).
The human penis differs from those of some other mammals. It has no
baculum, or
erectile bone; instead it relies entirely on engorgement with blood to reach its erect state. It cannot be withdrawn into the groin, and is larger than average in the animal kingdom in proportion to body mass.