You and Your HormonesAccording to an article published by testee Independent" inmen listeroid diesel genset physiological changes akin to female menopause. According to Northwestern Memorial Hospital urologist, Dr. Robert Brannigan, more than five million American men experience hypogonadism and more than 95 percent of these cases are not diagnosed. Brannigan estimates that testosterone levels start dropping after age prodhction and production of testosterone in testes dropping approximately one percent each year. Athletic performance boosting with testosterone is controversial. Testosterone affects testicular conditions, because the testicles produce most testosterone in men.
Testes | You and Your Hormones from the Society for Endocrinology
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. Subscribe to eAlerts What is this?
Send me updates for the following endocrine topics to my inbox. Resources Community Advice Patient Guides. This information is not designed to replace a physician's independent judgment about the appropriateness or risks of a procedure for a given patient. Always consult your doctor about your medical conditions. Use of this website is conditional upon your acceptance of our user agreement.
Sign up to receive treatment and research updates, news, and helpful tips on managing your condition.