4Male Reproductive System Epididymis:Two tightly coiled tubes that rest on top of the testesSperm move and matureTestes or testicles:Two small glands that produce spermThey produce male hormone testosteroneThey hang outside the body in the scrotumScrotum:External sac of skin that hold testesProtects testesRegulates Temperature
5Male Reproductive System Foreskin:A retractable double-layered fold of skin and mucous membrane that covers the glans penis.Penis:Spongy tissueMeans for sperm and urine to exit the bodyMale external organUrethra:Tube that carries semen and urine through the penisBladder:The organ that collects urine excreted by the Kidneys prior to disposal by urination
6Male Reproductive System Vas Deferens:Two long narrow tubes leading out of the epididymisCarry sperm to the urethraSeminal vesicles:Two small organs about the size of a finger located behind the bladderProduce nourishing fluid to give sperm energy to moveProstate Gland:The size and shape of a chestnutSecretes fluid to help move spermVas deferens tubes join urethra at prostate glandCowper’s gland:Pea sized glands that connects to the urethra via a tiny ductSecrete thick, clear mucus prior to ejaculation
8Male disorders- Circumcision: Removal of the foreskin Generally removed as an infantUndescended Testes:If the Testes fail to descend from the abdomen by the 1st year, hormone medication and/or surgeryInguinal hernia:Intestine may push through into the scrotumSurgeryTesticular Cancer:A cancer of the Testes that can affect males ages 15-35Can be treated if found early, may be detected during a self examinationSymptoms: painful urination, blood in semen, general discomfort, enlarged testes, lumpsProstate Cancer:This is most common in men 65 years of ageEasily treated if detected earlyAll men over forty should be testedSymptoms: painful & frequent urination, blood in semen/urine, general discomfort, enlarged testes, lumps
9Interesting Facts About the Male DID YOU KNOW…………… 200 million to 600 million sperm cells may be deposited in the vagina by a single ejaculation.Of those 200 – 600 million only a few hundred ever reach the egg.If the sperm does not meet the egg they are either killed by acid, deformed, or they don’t complete the journey.The male testes produce millions of sperm daily.Sperm account for 1/10 of the volume of semen.The journey to the fallopian tube for the sperm cells takes less than an hour following sexual intercourse.
10More interesting Facts about the male… Although many sperm cells may reach the egg, in most cases only one will actually fertilize it.The female egg may survive for only twelve to twenty-four hours following ovulation.Sperm may live up to seventy-two hours (three days) within the female reproductive tract.Ejaculation: muscle contractions that push semen through the urethra and out the penis.Nocturnal emissions (Orgasm): normal ejaculation of semen during sleep.There is no average size penis when it is soft – most adult erections are the same size: 5 ½ - 6 inches long.Hole’s Human Anatomy & Physiology Ninth Edition