Testosterone is a steroid hormone (androgen) produced by special endocrine tissue (the Leydig cells) in the male testicles. It is also produced by the adrenal glands in both males and females and, in small amounts, by the ovaries in females. This test measures the level of testosterone in the blood.  Testosterone is a vital male hormone that is responsible for the development and maintenance of male attributes. Women also have testosterone, but in much smaller amounts. The hypothalamus is the decision-maker. Most testosterone is produced in the testicles, but small amounts come from the adrenal glands, which are located just above the kidneys. In women, the adrenal glands and ovaries produce small amounts of testosterone. Before a boy is even born, testosterone is working to form male genitals. During puberty, testosterone is responsible for the development of male attributes like a deeper voice, beard, and body hai The Effects of Testosterone on the Body. Testosterone is an important male hormone. A male begins to produce testosterone as early as seven weeks after conception. Testosterone levels rise during puberty, peak during the late teen years, and then level off. After age 30 or so, it’s normal for a man’s testosterone levels to decrease slightly every year. Most testosterone is produced in the testicles, but small amounts come from the adrenal glands, which are located just above the kidneys. In women, the adrenal glands and ovaries produce small amounts of testosterone. Before a boy is even born, testosterone is working to form male genitals. During puberty, testosterone is responsible for the development of male attributes like a deeper voice, beard, and body hai Hormones. are secreted from the glands of the endocrine system, they are specific in that each hormone causes a response in a specific target organ or group of cells, rather than on the body as a whole. Exocrine hormones are secreted via a duct into the blood and usually effect a distant organ or tissue.  Hormone (androgen deprivation) therapy for prostate cancer. Hormone therapy is also called androgen deprivation therapy (ADT) or androgen suppression therapy. The goal is to reduce levels of male hormones, called androgens, in the body, or to stop them from affecting prostate cancer cells. The main androgens are testosterone and dihydrotestosterone (DHT). Most of the body’s androgens come from the testicles, but the adrenal glands also make a small amount Steroid hormones can be grouped into five groups by the receptors to which they bind: glucocorticoids, mineralocorticoids, androgens, estrogens, and progestogens. Vitamin D derivatives are a sixth closely related hormone system with homologous receptors. The term steroid describes both hormones produced by the body and artificially produced medications that duplicate the action for the naturally occurring steroids. interstitial cells. cells that secrete testosterone and are found in the interstitial tissue between adjacent seminiferous tubules of the testes; are almost nonexistent in the testes during childhood but are numerous in the newborn male infant for the first few months of life and in the adult male anytime after puberty.   .  Hormone produced by the pancreas that is released when stimulated by elevated glucose levels. This hormone decreases blood sugar levels by accelerating the transport of glucose into the body cells where it is oxidized for energy or converted to glycogen or fat for storage.  Testosterone and follicle-stimulating hormone (FSH) are required to obtain full reproductive potential. In the testis, somatic Sertoli cells transduce signals from testosterone and FSH into the production of factors that are required by germ cells as they mature into spermatozoa. 
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testosterone is an example of which type of hormone quizlet