A penis is a term defining male body part used for introducing sperm into the receptive organs of its female counterpart. Many animals have it, including both vertebrates and invertebrates, though not every species!

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In few paragraphs below, you will discover its detailed structure, what the average size is, many shocking facts, and even the way how an erection works!

Physiology & Structure of Human Penis

The length and girth of this body part may vary substantially between the mammals of different species. However, there is one common thing – the flaccid length is inferior to the size of erection.

Anyways, with regards to anatomy, there are 3 main parts to the human male reproductive organ:

  • The root – It begins at the caudal border of a pelvic ischial arch, which is the convergence of several pubic bones. The root is attached to the bulb of penis and lies inside of the perineal pouch.
  • The body – This is the part that extends from the root and makes up the shaft, skin, foreskin, and the prenuptial mucosa inside of your glans! The shaft is composed of 3 columns of tissues – corpora cavernosa on its dorsal sides and corpus spongiosum on its ventral side.
  • The glans – The glans – free end of the penis – is bulbous in shape. Its underside is called the frenulum, and its round base is called the corona. The perineal raphe is the line that runs along the bottom of this organ. On its tip is located the opening of a urethra (called meatus as well).

Pay attention: The human urethra is a tract that allows the release of urine or semen through the shaft. It passes through the prostate gland and is eventually joined by the ejaculatory duct!

What You Need to Know About Erection

man with size issue

The stimulation of this male organ into a point when it is prepared for sexual intercourse is referred to as erection. To achieve it, the following process takes place in your body:

  1. Blood vessels within your shaft go through significant dilation of arteries that supply blood.
  2. This causes your cock to become significantly engorged, stiffening it into a form that is ideal for the penetration!
  3. Engorged erectile tissue presses against the veins that carry your blood away, which constricts them and making them more visible on its surface.
  4. During erection, the skin upon your shaft is thinned out, which makes it more sensitive and renders it more susceptible to stimulation!

Pay attention: Some mammals have a great deal of erectile tissue in relation to the connective tissue; this is the reason horses’ penis has a greater ability to extend than bull’s.

6 Crazy Facts About Male Penis

Fact #1 – Did you know that the mammal version of this organ can be most accurately compared to that of a barnacle or an insect?

Fact #2 – Though most erections point upward, it is common for some to point vertically upward, downward, or even horizontally straight forward!

Fact #3 – Did you know that a baculum, erectile bone allowing for penetration with a flaccid penis, occurs in most mammals but does not occur in horses or humans?

Fact #4 – The chimpanzee has double the size of an adult gorilla, which is about 1.5 inches long on average!

Fact #5 – Some mammals can retract penis into their groin area!

Fact #6 – Human has the largest penis out of any primate in the animal kingdom, both in relation to his body measurements and in absolute terms as well!

Average Penis Size – The Truth Revealed!

young man with huge penis in pantsThere is no complete consensus in the studies that have been undergone. However, there is a universal agreement that the average erect human phallus is 5.6 inches long, with 95% of males tending to be between 4.2 and 7.5 inches!

Pay attention: A national study found there is no significant variation in penile sizes of 17 and 19 years old boys. This indicates that natural growth of this organ stops no later than the age of 17!

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