1. STRUCTURE and FUNCTION of MALE REPRODUCTIVE
REPRODUCTIVE SYSTEM
STRUCTURE and FUNCTION of
MALE REPRODUCTIVE

2. See Figure on pg. 460

3. TESTES AND epididymis Testes Found in scrotum Size of small egg
Made up of 250 lobules, each with coiled seminiferous tubules
Epididymis
Collection of tubes above the testes
Connect the testes with the vas deferens
See Figure on pg. 460

4. Vas deferens and scrotum
Runs from epididymis to ejaculatory duct
Seminal vesicles connect to vas deferens
Ejaculatory duct connects vas deferens with urethra
Scrotum
Sac of skin that contains testes

5. Penis, prostate gland, and bulbourethral glands
Contains erectile tissue
End covered by foreskin – loose fitting skin
Prostate Gland
Surrounds beginning of urethra
Size and shape of chestnut
Bulbourethral glands
Located on either size of prostate below prostate

6. TESTES Produce male gametes (spermatozoa)
Produce male sex hormone – testosterone
Inside, each lobule contains coiled seminiferous tubules where sperm develop
In embryo, testes formed in the abdomen and during the last 3 months, migrate into scrotum

7. Epididymis – where sperm are stored
Vas Deferens – serves as a passageway for sperm from epididymis to ejaculatory duct
Scrotum – serves as container for testes

8. PENIS Contains erectile tissue Organ of copulation
Tip of penis covered with foreskin, which is often removed during circumcision

9. Prostate Gland – secretes a fluid that enhances sperm motility and adds fluid to semen
Bulbourethral glands – add alkaline secretion to semen that helps sperm live longer
Infertility – lack of conception due to fallopian tube damage, low sperm count, hormone imbalance, and other disorders

10. ERECTION AND EJACULATION
Urethra has dual role: excretion of urine and to expel semen
Erection caused when erectile tissue fills with blood
Ejaculation expels semen
Impotence – unable to copulate (hold an erection)