External Male Genitals:
- Penis: A cylindrical structure with the capacity to be flaccid or erect (when filled with blood during sexual arousal), the penis corresponds to the clitoris in woman. The penis is highly filled with nerve endings, being responsible for the sexual pleasure. It also provides passage for both urine and semen, likewise other secretions released during sexual excitement.
- Gland: it's the head of the penis. The most sensitive part, plenty of nerve endings.
- Foreskin: a flap of skin that covers the gland in men who are not circumcised. Its function is to keep the gland clean and protected. A circumcised penis looks different, but it works basically the same way, with no further problems to sexuality.
- Scrotum: a pouch of skin hanging under the penis containing the testes. The testes are designed to drop out from the abdomen since the production of sperm requires a cooler temperature. That's why is not recommended for boys to wear tight underwear. By increasing the temperature in the testes for a long period of time, the production of sperm may be affected later in life.
Internal Male Genitals:
- Testes: being the most important male genital organs, the testes correspond to the woman's ovaries. These two oval-shaped glands located inside the scrotum have the function to produce sperm and male hormones, which are responsible for the development of the entire adolescent sexuality aspects and secondary sexual characteristics. Very sensitive of touch and pressure, the testes may be a source of sexual pleasure, but also are injury prone, in a football game for instance. It's wise to wear protections that are designed to protect the genital area during sports.
- Epididymides: has the function to store the sperm to mature, until they are released during ejaculation. The epididymides are highly coiled tubes placed on the backside of each testis.
- Vasa deferentia: a pair of tubes that carry the mature sperm from the epididymides to the urethra.
- Seminal vesicles: a pair of glandular sacs with the function of about 60% produce of the fluid, in which the sperm is transported, called semen. The seminal vesicles are placed behind the bladder.
- Prostate gland: a glandular structure lying near the rectum, which is responsible for the production of the other 30% semen. Until the ejaculation begins, a muscle at the bottom of the prostate keeps the sperm out of the urethra. Several muscular contractions release the semen out, causing the orgasm. The semen is a combination of sperm coming from the testes and fluids from the seminal vesicles as well as from the prostate at the time of ejaculation.
- Cowper's Glands: located at the base of the penis, the Cowper's glands secrete a mucus-like fluid, acting as a lubricant and coating the urethra for the passage of semen. This secretion may be released before orgasm and even during foreplay, and bear in mind that it may contain some sperm, enough to make a woman pregnant. That's why the withdrawal is hold in low regards. Suppress all the rush of the adolescent sexuality and wear a condom every time penetration takes place, to prevent headaches from pregnancy and sexual transmitted diseases.