What is Testosterone?Testosterone is produced by the gonads by the Leydig cells in testes in men and by the ovaries in womenalthough small quantities are also produced by the adrenal glands in both sexes. It is an androgen, meaning that it stimulates the development of male characteristics. Present in much greater levels in steroids hgh side effects than women, testosterone initiates the development of the male internal and external reproductive organs during foetal development and is essential for what kind of hormone is testosterone production of sperm in adult life. This hormone also signals the body to make new blood cells, ensures that muscles and bones stay strong during and after puberty and enhances libido both in men and women. Testosterone is linked to many of the what kind of hormone is testosterone seen in boys during puberty including an increase in height, body and pubic hair growth, enlargement of the penis, testes and prostate gland, and changes in sexual and aggressive behaviour. It also regulates the secretion of luteinising hormone and follicle stimulating hormone.
How Testosterone is Made in Men | The Art of Manliness
An Overview of the Testes Testes secrete the male hormone testosterone. Written by Robert M. The testes or testicles are a pair of sperm-producing organs that maintain the health of the male reproductive system. The testes are known as gonads. Their female counterpart are the ovaries. In addition to their role in the male reproductive system, the testes also have the distinction of being an endocrine gland because they secrete testosterone—a hormone that is vital to the normal development of male physical characteristics.
The testes are twin oval-shaped organs about the size of a large grape. They are located within the scrotum, which is the loose pouch of skin that hangs outside the body behind the penis. While this location makes the testes vulnerable to injury they have no muscles or bones to shield them , it provides a cooler temperature for the organs. A cooler environment is necessary for healthy sperm production.
Testosterone is necessary for proper physical development in boys. During puberty, testosterone is involved in many of the processes that transition a boy to manhood, including:. The importance of testosterone is not limited to puberty. Throughout adulthood, the hormone is integral in a variety of functions, such as:.
The hypothalamus and pituitary gland control how much testosterone the testes produce and secrete. The hypothalamus sends a signal to the pituitary gland to release gonadotrophic substances follicle stimulating hormone and luteinizing hormone. Luteinizing hormone LH stimulates testosterone production. If too much testosterone is produced, the hypothalamus alerts the pituitary gland to make less LH, which tells the testes to decrease testosterone levels.
Hypogonadism is a testicular disorder associated with low testosterone. Having testosterone levels that are too low causes a variety of problems, including:. There are two types of hypogonadism—primary and secondary.
Primary refers to a defect with the testicles, and secondary involves a problem in the pituitary gland that indirectly affects testosterone production. The testes play a vital role not only in the male reproductive system but in the endocrine system as well. The release of the hormone testosterone is integral to the healthy development of male physical characteristics.
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