Male Anatomy
Penis
Penis
Penis
Penis
Foreskin, glands, shaft
Cleaning uncircumcised foreskin Pull back foreskin Remove smegma
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 Varies with temperature
Other factors causing the scrotum to draw closer to the body: Sexual arousal Fear Stroking inner thighs Cremasteric reflex Cremasteric muscle
Testes Asymmetrical Heat reduces sperm production Left usually lower Best at 93 degrees
Seminiferous tubules (Within testes) Site of sperm production Interstitial (Leydig’s) cells produce androgens
Seminiferous tubules
Epididymis Storage of sperm
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 Can produce pregnancy without ejaculation
Course of sperm Testes Epididymis Vas Deferens Urethra
Erection Process of tumescence Morning erections Related to REM sleep Rapid eye movement 90 minute cycle Not related to a full bladder
Ejaculation Dry orgasm 2 phases Before puberty Emission Expulsion 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
Penis size
Penis size concern
Penis enlargement surgery Done by cutting the ligaments that attach the root to the pubic bone. http://www.drwhitehead.com/bnapicsLength.html