Penis is the external male sexual organ. It is primarily made up of two erectile tissue called Corpora Cavernosa, the part that fill with blood during an erection; and one smaller erectile tissue called Corpus Spongiosum, the mass of spongy tissue surrounding the urethra.

To get a better understanding of the penis, we have provided the Penis Anatomy Diagram (Picture is courtesy of Penis-Health)

Human penis is primarily made up of three columns of erectile tissues: two large chambers called Corpora Cavernova lie next to each other on the upper side and one smaller chamber lies on the bottom side called Corpus Spongiosum.

Corona: The 'crown,' a ridge of flesh demarcating where the head of the penis and the shaft join.

Corpora Cavernosa: The two sponge-like of erectile tissue located on either side of the penis which is filled with blood during erection.

Cowper's Glands: The Cowper's glands secrete a small amount of pre-ejaculate fluid prior to orgasm. This fluid neutralizes the acidity within the urethra itself.

Ejaculatory Ducts: The path through the seminal glands which semen travels during ejaculation.

Epididymis: A tortuously coiled structure where sperm collect, mature and pass. It is located above and behind the testicles.

Foreskin (Prepuce): A roll of skin which covers the head of the penis in un-circumcised men.

Frenulum (Frenum): A thin strip of flesh on the underside of the penis that connects the shaft to the head.

Glans: The Glans is the tip or head of the penis. In un-circumcised men is usually covered by the foreskin. The Glans is highly sensitive, as is the Corona, the ridge of flesh that connects the glans to the shaft of the penis.

Prostate Gland: Prostate Gland produces a fluid that makes up the semen. It 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.

Scrotum: The Scrotum is a sac that hangs behind and below the penis, and contains 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.

Seminal Vesicles: The seminal Vesicles produce semen, a fluid that activates and protects the sperm after it has left the penis during ejaculation.

Smegma: A substance with the texture of cheese secreted by Glands on each side of the Frenulum in un-circumcised men.

Testes (Testicles): A pair of male sexual glands that lie within the scrotum. It produce sperm and testosterone. Within each testicle is a kilometer of ducts called the seminiferous tubules, the organs which generate sperm. Each testicle produces nearly 150 million sperm every 24 hours.

Smegma: A substance with the texture of cheese secreted by Glands on each side of the Frenulum in un-circumcised men.

Urethra (Meatus): he tube that carries urine from the bladder and semen from the prostate out through the tip of the penis.

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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