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MALE SEXUAL DEVELOPMENT |
Males usually enter puberty between the ages of 10 and 14.
The first physical signs are growth of the testes and penis, accompanied or followed by growth of pubic and other body hair.
Changes in the larynx cause a deepening of the voice and growth of an “Adam’s apple.”
Males also demonstrate an increase in facial hair that begins with a mustache and within a few years extends over most of the lower face.
Rising testosterone levels stimulate increased muscle mass during the growth spurt, and male biceps, shoulder, and thigh muscles grow larger than in girls.
During the growth spurt, breast tissue may develop in up to two-thirds of adolescent boys, but this usually disappears in about 6 months (although in some it may persist for a year or longer). Occasionally a source of embarrassment, male breast tissue usually is not a sign of any abnormality.
Ejaculations begin between the ages of 11 and 15, although any time between the ages of 8 and 21 is considered normal. Ejaculation may occur during sleep or in response to masturbation or a sexual fantasy.
Adolescence usually is completed by the age of 17 or 18; growth may continue until the age of 20 or 21 (Tapley et al.).
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» Female sexual development
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A few generations ago, many people warned that masturbation caused warts, pimples, blindness, and hair on your palms. If that were true, there would be a lot of warty, pimply, blind, hairy people walking around!
(McCave 56)
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