1. 4.06 Understand the functions and disorders of the male reproductive system

2. Essential questions
What is the function of the male reproductive system?
What are some common disorders of the male reproductive system?
How do you relate the body’s hormone control to the male and female reproductive systems

3. Functions of the male reproductive system
Hormone production
What is the male sex hormone?
> Testosterone
What does it do?
> stimulates the growth and development
of male organs
> underlies the sex drive
> responsible for secondary sex
characteristics ( deep voice, body hair,
muscle mass, bone thickening)

4. Reproduction -
the union of male and female reproductive cells (gametes)

5. Testes Seminiferous tubules Epididymis
Production of sperm resulting from FSH stimulation
Requires about 74 days
Begins about 12 y/o; first released about 14 y/o
Epididymis
Here LH stimulates testosterone
Connects the testes with the ductus deferens aka vas deferens
Aid in the final sperm cell growth

6. Sperm What is the function of the sperm?
carry the 18,000 male genes to the female's egg
How many sperm does the average male have?
In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month.
A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.
How is this different from the female reproductive system?
About 400 ova created within the first five months after conception
Only one egg released every month during the reproductive years

7. Discuss the functions of these structures: Vas Deferens
Storage for sperm cells
Excretory duct for the testis
Ejaculatory duct
Short and narrow
A path for semen and sperm to exit the body

8. What is the function of the seminal vesicles?
Produce secretions to assist in nourishing and protect the sperm on its journey through the female reproductive system
Seminal fluid is added to sperm cells as they leave the ejaculatory ducts
What would happen if this was not working?
No medium for sperm travel or protection; may not be able to father a child

9. How does the urethra serve the reproductive system?
Carries sperm out of the penis during copulation.
What structure of the urinary system does the urethra connect?
The urinary bladder and it is a pathway for urine to leave the body.

10. Functions of the male reproductive system:
Prostate gland
What is the function of the thin, milky alkaline secretion produced by the prostate gland during copulation?
Enhances sperm motility and gives semen a strong musky odor
What would happen if the prostate hypertrophied?
Decrease sperm motility and viability

11. Bulbourethral glands Also called Cowper’s gland
What is the function of the secretion produced by the bulbourethral glands?
It is alkaline, which aids in neutralizing the acidity of the female vagina and male urethra so
the sperm will be more likely to survive the journey to the egg
How is it important to reproduction?
Enhances viability and motility of sperm

12. What is the
function of
the penis?
Urination
Sexuality and
pleasure
Reproduction and
procreation

13. Disorders of the male reproductive system

14. Cryptorchidism Who will have this condition?
What are the risks if left untreated?
What is the treatment?

15. Epididymitis What are the most common causes epididymitis?
What are some risk factors that predispose someone to this condition?

16. Erectile Dysfunction Also known as impotence
Failure of the penis to become rigid enough for intercourse to occur.
Common causes:
Acute
Chronic
How is it treated?

17. Benign prostatic hypertrophy (BPH)
What are the usual symptoms?
Who is most likely to develop BPH?
How is it treated?
Is it cancer?

18. Prostate cancer
What age group is most susceptible to prostate cancer?
How is it treated?
What are the reproductive side effects to treatment?

20. Testicular cancer
What the risk factors for developing testicular cancer?
What are the most likely symptoms?

22. Testicular self-examination
Testicular self-examination is an examination of the testicles. The testicles (also called the testes) are the male reproductive organs that produce sperm and the hormone testosterone. They are located in the scrotum under the penis.
Perform this test during or after a shower. This way, the scrotal skin is warm and relaxed. It's best to do the test while standing.

23. Testicular self-examination
1.Gently feel your scrotal sac to locate a testicle.
2.Hold the testicle with one hand while firmly but gently rolling the fingers of the other hand over the testicle to examine the entire surface.
3.Repeat the procedure with the other testicle.
You should perform a testicular self-exam every month if you have any of the following risk factors:
•Family history of testicular cancer
•Past testicular tumor
•Undescended testicle
•You are a teenager or young adult