Testosterone - Simple English Wikipedia, the free encyclopedia

Testosterone is an androgen sex hormone. A hormone is one that is made from cholesterol. A sex hormone is one that regulates sexual changes in the body. An androgen is the male type of sex hormone.

The testicles of men make lots of testosterone. Ovaries and adrenal glands make testosterone too. But they make much less than the testicles do. So men have much higher testosterone levels than women. The process takes place during the ages of puberty for both males and females

Testosterone has two different kinds of effects. One effect is anabolic. This effect causes growth of muscle and bone. The other effect of testosterone is androgenic. These effects make the body look male. This includes the effects that boys have at puberty: growing a beard, making the penis and testicles bigger, and making the voice deeper.

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Human reproductive system
Female anatomy	Female reproductive system – Breasts – Cervix – Clitoris – Clitoral hood – Fallopian tubes – Bartholin's glands – Gräfenberg spot (G-spot) – Hymen – Labia – Ovaries – Skene's glands – Urethra – Uterus – Vagina – Vulva
Female physiology	Menstruation – Pregnancy – Childbirth – Lactation – Estrogen – Orgasm – Ovum
Male anatomy	Male reproductive system – Bulbourethral glands – Corpus cavernosum – Ejaculatory ducts – Epididymis – Foreskin – Frenulum – Glans penis – Penis – Prostate – Rete testis – Scrotum – Seminal vesicles – Seminiferous tubules – Sertoli cell – Spermatic cord – Testicles (testes) – Urethra – Vasa deferentia
Male physiology	Ejaculation – Erection – Orgasm – Semen – Sperm – Testosterone
Anatomy is the study of the parts of the body • Physiology is the study of how the body works