The Sexual Anatomy Of a Male |
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Uncircumcised penis
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Circumcised penis
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Erect penis
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The penis and scrotum are the External
Sexual organs of men. |
| Vocabulary of the penis and scrotum |
Glans |
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The glans is clearly visible in illustration (A) as the head of the penis. The glans
in uncircumcised men is usually covered by the prepuce. The glans is highly sensitive,
as is the corona, the ridge of flesh that connects the glans to the shaft of the
penis. |
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Corona |
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The 'crown,' a ridge of flesh demarcating where the head of the penis and the shaft
join. |
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| Frenulum, frenum |
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A thin strip of flesh on the underside of the penis that connects the shaft to the
head. |
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| Foreskin, prepuce |
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A roll of skin which covers the head of the penis in uncircumsized men. |
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| Urethra, meatus |
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The opening at the tip of the penis to allow the passage of both urine and semen. |
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| Smemga |
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A substance with the texture of cheese secreted by glands on each side of the frenulum
in uncircumsized men. |
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| Scrotum |
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The scrotum is a sac that hangs behind and below the penis, and containts the testes,
the male sexual glands. The scrotum's primary function is to maintain the testes
at approximately 34 C, the temperature at which the testes most effectively produce
sperm. |
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| Male
Internal Sexual Anatomy
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| Testes, Testicles. |
| The male sexual glands, the two testes within the scrotum produce sperm and testosterone.
Within each testis is a kilometer of ducts called the seminiferous tubules, the
organs which generate sperm. Each testicle produces nearly 150 million sperm every
24 hours. |
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| Epididymis
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The epididymis is a 'holding pen' where sperm produced by the seminiferous tubules
mature. The sperm wait here until ejaculation or nocturnal emission. |
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| Vas
deferens |
| The ducts leading from the epididymis to the seminal vesicles. These are the ducts
that are cut during the procedure known as vasectomy. |
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| Seminal vesicles |
| The seminal vesicles produce semen, a fluid that activates and protects the sperm
after it has left the penis during ejaculation. |
| The
Prostate gland |
| Also produces a fluid that makes up the semen. The prostate gland also squeezes
shut the urethral duct to the bladder, thus preventing urine from mixing with the
semen and disturbing the pH balance required by sperm. |
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| Corpa
cavernosa |
| TThe corpora cavernosa are the two spongy bodies of erectile tissue on either side
of the penis which become engorged with blood from arteries in the penis, thus causing
erection. |
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| Ejaculatory
Ducts |
| The path through the seminal glands which semen travels during ejaculation. |
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| Cowper's
Glands |
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The Cowper's glands secrete a small amount of pre-ejaculate fluid prior to orgasm.
This fluid neutralizes the acidity within the urethra itself. |
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