Penis anatomy

External genitalia

Glans - is the head of the penis and it is usually covered by the prepuce/foreskin if the penis is uncircumcised and flaccid. There are cases when the penis is still partially covered by the foreskin even if it is erect.

Corona - is the “crown” of the penis, the ridge that gives it the mushroom look.

Frenulum/Frenum is that flesh thread on the underside of the penis that seems to hold the skin connected to the tip of the penis

Urethra - the tube going through the penis that allows sperm and urine to come out. We can see the opening on the tip of the penis, which is the end of the urethra.

Foreskin/Prepuce - the extra skin that covers the penis and which is removed during circumcision. Let make it clear for everyone that during circumcision only that particular portion of the penis is removed.

Scrotum is the sac that holds the testicles. We usually refer to it as testicles, but the outside sac is called scrotum. The primary function of the scrotum is to keep the testicles “cool”, around 34 degrees Celsius, a temperature that seems to be perfect for producing sperm.

Smegma - this is a substance secreted by the glands on each side of the Frenulum. It has a cheese-like texture and it should let you know it’s time for a shower in case you see it.

Internal Genitalia

Internal male genitalia

Corpus cavernosa - a sponge-like tissue that goes along the penis on both sides and fills up with blood when aroused. The tissue holds the blood and creates this way the erection.

Testes/Testicles - the glands responsible with the production of sperm and testosterone. Each testicle consists of seminiferous tubules, a 1 kilometer long maze-like ducts network that produce sperm.

Epididymis - a storage room for sperm where it matures and waits for the next ejaculation or nocturnal emission.

Vas deferens - ducts leading from the storage (epididymis) to the seminal vesicles. These ducts are cut during the vasectomy procedure.

Seminal vesicles produce the liquid that protects sperm.

The prostate is a gland that also produces semen, but also keeps shut the urethra by pressing it against the bladder so that urine does not mix with semen.

Cowper’s Gland - this gland secrets a fluid that neutralizes the acidity produced by urine inside the urethra. In other words, it prepares the road for the sperm so that it comes out clean.

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One Response to “Penis anatomy”

  1. Daniel Says:

    I couldn’t understand some parts of this article s anatomy, but I guess I just need to check some more resources regarding this, because it sounds interesting.

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