Male sex organ research









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How does the male reproductive system function. FSH is necessary for sperm production spermatogenesis , and LH stimulates the production of testosterone, which is necessary to continue the process of spermatogenesis. It contains the testicles also called testes , as well as many nerves and blood vessels. If a man is healthy, he may be able to make sperm well into his 80s or longer. Ejaculatory ducts — These are formed by the fusion of the vas deferens and the seminal vesicles. Prostate gland — The prostate gland is a walnut-sized structure that is located below the urinary bladder in front of the rectum.

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Urethra — The urethra is the tube that carries urine from the bladder to outside of the body. Special muscles in the wall of the scrotum allow it to contract tighten and relax, moving the testicles closer to the body for warmth and protection or farther away from the body to cool the temperature. On the other hand, subtle changes in the function of the testes may occur as early as 45 to 50 years of age, and more dramatically after the age of Seminal vesicles — The seminal vesicles are sac-like pouches that attach to the vas deferens near the base of the bladder. Male Reproductive Anatomy The organs of the male reproductive system are specialized for the following functions. The opening of the urethra, the tube that transports semen and urine, is at the tip of the glans penis.

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If a man is healthy, he may be able to make sperm well into his 80s or longer. Cleveland Clinic is a non-profit academic medical center. How many middle-aged men will benefit from such therapy remains an open question. The external structures of the male reproductive system are the penis, the scrotum and the testicles. The testes, unlike the ovaries, do not lose the ability to make hormones. The prostate gland contributes additional fluid to the ejaculate.

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Description: Whether decreasing testicular function contributes to such symptoms as fatigue, weakness, depression or impotence often remains uncertain. Seminal vesicles — The seminal vesicles are sac-like pouches that attach to the vas deferens near the base of the bladder. FSH is necessary for sperm production spermatogenesis , and LH stimulates the production of testosterone, which is necessary to continue the process of spermatogenesis. For many men, hormone production may remain normal into old age, while others may have declining hormone production earlier on, sometimes as a result of an illness, such as diabetes. Testicles testes — The testes are oval organs about the size of very large olives that lie in the scrotum, secured at either end by a structure called the spermatic cord. The skin of the penis is loose and elastic to allow for changes in penis size during an erection. However, replacing male hormones can make prostate cancer worse, and may make atherosclerosis hardening of the arteries worse, also. This fluid serves to lubricate the urethra and to neutralize any acidity that may be present due to residual drops of urine in the urethra. When the penis is erect during sex, the flow of urine is blocked from the urethra, allowing only semen to be ejaculated at orgasm. The external structures of the male reproductive system are the penis, the scrotum and the testicles.
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