Presentation on theme: "Male Reproduction Testosterone: Male sex hormone"— Presentation transcript:
1 Male Reproduction Testosterone: Male sex hormone ~Testosterone causes the production of sperm.Sperm: Male reproduction cell~Two biological functions of the male reproduction system:1.Production of sperm2. Transfer of sperm to the female body during intercourse
2 External OrgansPenis: Tube-like organ attached to the trunk of the body just above testes.~Functions: Sexual reproduction, sexual pleasure and elimination of waste.Scrotum: Protects sperm by keeping the testes 3-4 degrees below normal body temperature.~If the temp. rises, the muscles of the scrotum relax, lowering the testes.~If the temp. drops, muscles contract, pulling testes closer to the body.Erectile Tissue: Tissue that becomes engorged with blood.
3 Internal OrgansEpididymis: Stores newly produced sperm for about 64 days until fully matured.Vas Deferens :A pair of connecting tubes, each 18 inches long that lead up into the males’ body toward other internal organs.~ Thick muscle walls of the Vas Deferens propel the sperm forward.Seminal Vesicles: Attached near the base of the bladder to the Vas Deferens.~The fluid contains nutrients and mixes w/ sperm.Prostate Gland: Small gland that surrounds Urethra.Cowpers Gland: Two pea –sized glands that open into Urethra, secrete a clear sticky fluid to cleanse the urethra of urine and left over sperm.Urethra: Tube-like organ that travels through the penis, carries sperm and urine.~Semen and urine do not pass through the body at same time.~A muscle near the bladder contracts, preventing urine from entering urethra.
4 Ejaculation: Fluid from prostate, fluid from seminal vesicles and million sperm all combine to make semenSemen: a thick fluid containing sperm and other secretions from male reproduction organs.Fertilization: Is the union of a reproduction cell from a male and one from a female.Foreskin- penis is covered w/ a fold of skin at birth.Circumcision: Surgical removal of the foreskin of the penis.
6 Male ConcernsHernia: Part of the body pushes through the muscle wall normally keeping it in.(Example: Inguinal Hernia- part of the intestine pushes through into scrotum. *Surgery is need to correct.)Sterility: Sperm is weak, malformed, sparse or nonexistent. Fertilization does not occur.~Causes- Exposure to chemicals, smoking, STD’s, malfunction of one of the internal organs.Prostate Cancer: Uncontrolled growth of cells.~Treatments- Removal of prostate or radiation therapy and hormonal therapy.Testicular Cancer: Signs- Enlargement of testicles, lump or fluid collection, dull ache in the lower abdominal or groin area.~Frequently males
7 Preventing problemsPrevent STD’sPrevent jock itchPrevent Trauma (wear a sports cup)Prevent hernias (caused by straining to push or lift something, heavy coughing or sneezing)Prevent infertility