Testosterone is a sex hormone that is responsible for aiding in the development of the male sexual characteristics. Females also have minute concentrations of the hormone, but it is mostly found in males and is considere... More »

www.reference.com Science Human Anatomy Glands & Hormones

According to WebMD, testosterone is produced primarily by the testes, the main male organs of reproduction, though it is also produced in small amounts by women's ovaries. Testosterone production in the testes is conditi... More »

Normal blood levels of testosterone vary between 300 and 1,000 to 1,200 nanograms per deciliter, according to WebMD. Testosterone is a sexual hormone responsible for the development of male sexual traits after puberty. M... More »

www.reference.com Health Medical Ranges & Levels

Testosterone is the primary male sex hormone, and its main function is to control male physical features. This hormone is created in the testes, and testosterone helps transform a boy into a man. Testosterone deepens the... More »

Testosterone injections are administered by injecting the sex hormone into muscle tissue, typically in the major muscles of the thigh, hip, upper arm or buttocks, according to Drugs.com. The injections are used in males ... More »

www.reference.com Science Human Anatomy Glands & Hormones

Cortisol, a hormone that the adrenal cortex produces in response to stress, prepares the body to react to potentially dangerous situations. It increases the level of sugar in the bloodstream and the brain's use of glucos... More »

www.reference.com Science Human Anatomy Glands & Hormones

The endocrine system is vital to reproduction, controlling everything from the sex of an organism to the generation and release of gametes and even the sex drive. The endocrine system is responsible for the creation and ... More »