1. Pre-Ejaculation What’s the purpose of pre-ejaculatory fluid?
If contraceptives are not used, can a woman become pregnant from pre-ejaculatory fluid?
If a man has a vasectomy, can they still ejaculate? If so, what makes up the ejaculate?

2. Male Reproduction System
Function – to produce a sperm cell
Male reproduction cell
Sperm cell unites with a female egg (ovum) to form a fertilized ovum
Production starts at puberty (ages 12-15)
Testosterone causes the testes to produce sperm
Spermatogenesis – produce sperm for the rest of his life

3. External Male Reproduction Organs
Testes – male sex glands, manufacture the male sex hormone – testosterone and produce male reproduction cell – sperm
Scrotum – sac that hold the testes.

4. Testes
Seminiferous tubules – sperm is produced in this section of the testes
500 million each day
Epididymis – stores newly produced sperm
64 days for sperm to fully mature

5. Penis
Tubelike organ that functions in sexual reproduction, sexual pleasure and elimination of body wastes.
Erections – blood fills three cylinders which surround the urethra
Ejaculation – release of reproduction fluids
Penis size varies from male to male

6. Circumcision Fold of skin that covers the end of the penis (born with)
Surgical removal of the foreskin

7. Internal Male Reproductive Organs
Vas Deferens – a long tube that connects the epididymis with the urethra
Seminal Vesicles – Two little pouches just above and either side of the prostate gland, they secrete a fluid that mixes with sperm- the fluid travels down the ejaculatory duct to mix with the sperm
Prostate Gland – below the bladder and surrounds the urethra, secretes a milky and alkaline fluid that mixes with sperm (size of a chestnut)
Cowper’s Gland – glands that open into the urethra, secrete a clear and sticky fluid that will cleanse the urethra of acid from urine
Urethra – tubelike organ that travels through the penis and leads to the ejaculatory ducts, passage way for sperm and urine
Semen – mixture of fluids from the seminal vesicles, prostate gland and Cowper’s gland

8. Concerns about the Male Reproduction System
Nocturnal Emissions
Hernia – pushing of a part of the body through the muscle wall that normally contains it
Inguinal hernia – weak spot in the abdominal wall near the top of the scrotum. Part of the intestine may push through

9. Concerns Sterility – weak or malfunctioning sperm Temperature changes
Certain chemicals
Smoking
Contracting mumps as an adult
Untreated STD’s
Faulty operation of epididymis, vas deferens, or urethra

10. Concerns
Testicular Cancer
1% of all cancer
15-34 years of age

11. Concerns Prostate Cancer
Prostate gets bigger and blocks the urethra or bladder
2nd most common type of cancer in men