Male Anatomy

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Male Anatomy
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Penis-1
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Penis-2
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Penis
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Foreskin, glands, shaft
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Male circumcision
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3 cylinders

• 2 larger cavernous bodies
• 1 smaller spongy body
• Forms head of the penis

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Penis- spongy body
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Penis dissection
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Penis, prostate dissection
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Penis curvature
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Scrotum

• Varies with temperature

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Testes

• Asymmetrical
• Left usually lower
• Heat reduces sperm production
• Best at 93 degrees

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Seminiferous tubules (Within
testes)

• Site of sperm production
• Interstitial (Leydigs) cells produce androgens

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Seminiferous tubules
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Epididymis

• Storage of sperm

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Cremasteric reflex

• Cremasteric muscle

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Cryptorchidism

• Undescended testis
• Prevents sperm production - too warm

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Vas Deferens

• Moves sperm from scrotum to ejaculatory duct
• Within prostate gland

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Seminal vesicle

• At end of each vas deferens
• Alkaline fluid

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Seminal fluid (semen)

• 70 Seminal vesicles
• 30 Prostate gland
• 1 Sperm
• 1 teaspoon
• 200-500 million sperm per ejaculation

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Cowpers (bulbourethral) glands

• Distilate of love
• Contains active, healthy sperm

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Course of sperm

• Testes
• Epididymis
• Vas Deferens
• Urethra

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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

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Ejaculation

• Dry orgasm
• Before puberty
• 2 phases
• Emission
• Fluid in ejaculatory duct
• Expulsion
• Semen expelled

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Retrograde ejaculation

• Semen expelled into bladder
• May result from
• Prostate surgery
• Certain drugs
• Congenital abnormality

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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

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Prostate cancer

• Second leading cause of cancer deaths among men
• Detected by
• Digital rectal exam
• Blood test (PSA test)
• Ultrasound

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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

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Penis size
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Penis size concern
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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.

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Male Kagel exercises

• Locate PC. Muscle by stopping flow of urine
• Better ejaculatory control
• Similar to female Kagel exercises