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Male Genitalia 101

The Basics of Male Genitalia

By Cory Silverberg, About.com

Updated: February 19, 2008

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Despite many similarities the diversity in male genitalia is vast. Men’s genitals, inside and out, can look and function very differently from one man to the next, and in the same man over time.

Below you’ll find a description of male genitalia, with links to more information on how the different parts of male genitalia work, what they look like, and what impact they have on male sexuality.

The best way to learn about your body is to have a look, on your own, at a time and place where you have plenty of privacy. Most people think that because “it’s all hanging out there” guys know everything about their bodies. But men are usually only encouraged to look at themselves in a competitive and functional way. We tend to take what we get and don’t bother to look for possible points of pleasure unless they are immediately apparent.

The Penis

The penis is made up of spongy erectile tissue, which fills with blood when a man is turned on or aroused and usually becomes erect. Penises come in all sizes, and penis size in almost all cases has nothing to do with how a penis works or how well a penis works. There are several different parts to the penis, each of which has some impact on feeling sexual arousal and pleasure.
Learn more about penis anatomy.

Scrotum and Testicles

The scrotum is the loose pouch of skin containing the testicles (or “balls”). The primary function of the scrotum is to protect the testicles, which are very sensitive to pain, and which also need to keep an even body temperature to function properly. The testicles serve two main functions: producing sperm and producing testosterone.
Learn more about the anatomy and sexual function of the scrotum and testicles.

Prostate Gland

The prostate gland is about the size of a chestnut and can be found near the root of the penis (the place inside your body where the penis starts) and just below the bladder. The prostate gland produces part of the ejaculatory fluid (also called seminal fluid).
Learn more about the prostate gland.

Perineum

The male perineum is the area between the scrotum and the anus. During sexual arousal the perineum can become sensitive, and can be another site of sexual stimulation and pleasure. Massaging the perineum can also provide indirect prostate stimulation and stimulation of the root of the penis, both of which are above the perineum inside the body.
Read the complete definition of the perineum.

PC Muscle

The pubic bone is surrounded by a sling of muscles called the pubococcygeus muscles (or “PC muscle” for short). These muscles play a vital part in your sexual health, and control of them can help men learn ejaculatory control. Once a man locates the pc muscles , he can do special exercises, called kegels can be done my men to strengthen and control their pc muscles.

Anus

Not usually thought of as a part of ones sexual anatomy (because it has no role in reproduction) the anus can be a site of great sexual pleasure and many people enjoy anal play as part of their sexual repertoire.
Learn more about the anus.
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