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Male Anatomy. Penis-1. Penis-2. Penis. Foreskin, glands, shaft. Male circumcision. 3 cylinders. 2 larger cavernous bodies 1 smaller spongy body Forms head of the penis. Penis- spongy body. Penis dissection. Penis, prostate dissection. Penis curvature. Scrotum.
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3 cylinders • 2 larger cavernous bodies • 1 smaller spongy body • Forms head of the penis
Scrotum • Varies with temperature
Testes • Asymmetrical • Left usually lower • Heat reduces sperm production • Best at 93 degrees
Seminiferous tubules (Within testes) • Site of sperm production • Interstitial (Leydig’s) cells produce androgens
Epididymis • Storage of sperm
Cremasteric reflex • Cremasteric muscle
Cryptorchidism • Undescended testis • Prevents sperm production - too warm
Vas Deferens • Moves sperm from scrotum to ejaculatory duct • Within prostate gland
Seminal vesicle • At end of each vas deferens • Alkaline fluid
Seminal fluid (semen) • 70% = Seminal vesicles • 30% = Prostate gland • 1% = Sperm • 1 teaspoon • 200-500 million sperm per ejaculation
Cowpers (bulbourethral) glands • Distilate of love • Contains active, healthy sperm
Course of sperm • Testes • Epididymis • Vas Deferens • Urethra
Erection • Process of tumescence • Morning erections • Related to • REM sleep • Rapid eye movement • 90 minute cycle • Dreaming about lover • Lover kissing while asleep • Not related to a full bladder
Ejaculation • Dry orgasm • Before puberty • 2 phases • Emission • Fluid in ejaculatory duct • Expulsion • Semen expelled
Retrograde ejaculation • Semen expelled into bladder • May result from • Prostate surgery • Certain drugs • Congenital abnormality
Male cancers • Testicular cancer • One of the most common cancers among young men - 15-34 age group • Survival rate very high if detected early • Genital self-exam recommended • To identify early symptoms • Lumps on testes
Prostate cancer • Second leading cause of cancer deaths among men • Detected by • Digital rectal exam • Blood test (PSA test) • Ultrasound
Male sexual concerns • Penis size • Not related to sexual satisfaction • Possibly diameter rather than length • Small flaccid penis usually increases more during erection than larger flaccid penis • Text does not give size information
Circumcision • Cervical cancer - higher in women having sex with uncircumcised men • Vaginal infections - May increase in women who have sex with uncircumcised men due to bacteria under the foreskin • Uncircumcised men - more likely to become infected with HIV through heterosexual intercourse than circumcised men.
Male Kagel exercises • Locate PC. Muscle by stopping flow of urine • Better ejaculatory control • Similar to female Kagel exercises