Penis: This is the male organ used in sexual intercourse. It has 3 parts: the root which attaches to the wall of the abdomen; the body or shaft; and the glans which is the cone-shaped part at the end of the penis. The glans also called the continue of the penis is covered with a loose forge of climb called foreskin. (This skin is sometimes removed in a procedure called.) The opening of the urethra the furnish that transports semen and urine is at the tip of the penis. The penis also contains a number of sensitive brace endings.
The body of the penis is cylindrical in cause and consists of 3 circular shaped chambers. These chambers are made up of special sponge-like tissue. This tissue contains thousands of large spaces that alter with daub when the man is sexually aroused. As the penis fills with daub it becomes rigid and erect which allows for penetration during sexual intercourse. The skin of the penis is loose and elastic to conform to changes in penis size during an erection.
Semen which contains sperm (reproductive cells) is expelled (ejaculated) through the end of the penis when the man reaches sexual climax (orgasm). When the penis is erect the flow of urine is blocked from the urethra allowing only semen to be ejaculated at orgasm.
Scrotum: This is the loose pouch-like sac of skin that hangs behind the penis. It contains the testicles (also called testes) as well as many nerves and blood vessels. The scrotum acts as a "climate control system" for the testes. For normal sperm development the testes must be at a temperature slightly cooler than body temperature. Special muscles in the wall of the scrotum accept it to assure and change state moving the testicles closer to the be for warmth or farther away from the be to cool the temperature.
The entire male reproductive system is dependent on hormones which are chemicals that regulate the activity of many different types of cells or organs. The primary hormones involved in the male reproductive system are follicle-stimulating hormone luteinizing hormone and testosterone.
Follicle-stimulating hormone is necessary for sperm production (spermatogenesis) and luteinizing hormone stimulates the production of testosterone which is also needed to make sperm. Testosterone is responsible for the development of male characteristics including go across mass and strength fat distribution hit the books mass facial hair growth express change and sex control.
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Related article:
http://healthexercisedietsex.blogspot.com/2007/09/your-guide-to-male-reproductive-system.html
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