Penis

Penis is the external male reproductive organ, which passes urine and semen out of the body.

Human penis

The human penis is a reproductive organ found in males. It is responsible for the transfer of sperm during sexual reproduction and is also used for urination. The penis is made up of several parts, including the shaft, glans, and foreskin.

Anatomy

The shaft of the penis is the main part of the organ and is made up of three columns of tissue. These columns are filled with spongy tissue that becomes engorged with blood during an erection. The glans, also known as the head of the penis, is located at the tip of the shaft. It is highly sensitive and contains the opening for the urethra, through which urine and semen are expelled. The foreskin is a fold of skin that covers the glans in uncircumcised males.

Size

The penis grows in length and width during puberty as a result of increased levels of testosterone in the body. The average size of an adult male penis is about 5.16 inches when flaccid and about 6.29 inches when erect. However, there is a wide range of normal size, and size is not necessarily related to sexual performance or pleasure.

Functions

The penis has a number of functions, including the transfer of sperm during sexual reproduction, the expulsion of urine, and the sensation of pleasure during sexual activity. The penis can become erect due to sexual arousal or other stimuli, such as touch. Erections are caused by increased blood flow to the penis, which causes the spongy tissue to become engorged and the penis to become rigid.

Summary

The penis is an important part of the male reproductive system and plays a crucial role in sexual reproduction. It is also an important part of male anatomy and is often a source of pride and sensitivity for many men.

Also see

• Anatomy of the Penis
• Reproductive system