1. Chapter 12 Growing and Changing Lesson 3 The Male Reproductive System
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2. The process by which living organisms produce others of their own kind
reproduction
reproductive system
The body organs and structures that make it possible to produce children
sperm
Male reproductive cells
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3. The pair of glands that produce sperm
testes
The pair of glands that produce sperm
A mixture of sperm and fluids that protect sperm and carry them through the tubes of the male reproductive system
semen
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4. In this lesson, you will learn to
describe the functions of the male reproductive system.
identify the organs and structures of the male reproductive system.
identify common problems of the male reproductive system.
explain how to care for the male reproductive system.
identify ways for detecting testicular cancer.

5. Sequencing
Take a look at Figure Using this figure, trace the path of sperm from where they are produced to outside of the body. Make a list of the structures that sperm pass through.

6. Because of reproduction, all forms of life continue to exist.
reproduction The process by which living organisms product others of their own kind

7. Reproduction
Each human results from the joining of two cells that come from the reproductive system.
reproductive system The body organs and structures that make it possible to produce children

8. Parts of the Male Reproductive System
The main job of the male reproductive system is to produce sperm.
sperm Male reproductive cells
Each sperm can join with a female reproductive cell and make another human being.

9. Parts of the Male Reproductive System
The scrotum keeps the testes at the right temperature to produce sperm.
testes The pair of glands that produce sperm
Sperm leaves the testes and travels to the urethra.

10. Parts of the Male Reproductive System
Semen is released from the urethra through the penis.
semen A mixture of sperm and fluids that protect sperm and carry them through the tubes of the male reproductive system
There are three to four million sperm cells in each ejaculation.
The body’s release of semen is called ejaculation.

12. Male Health Problems
Most problems of the male reproductive system can be prevented or treated.
If not prevented or treated, these problems can lead to pain, injury, the inability to produce children, or even death.

13. Male Health Problems Problems of the Male Reproductive System
Inguinal hernia
A part of the intestine may push through a weak spot in to the scrotum or into the area about the inner thighs. This problem can be treated with surgery.
Testicular cancer
A lump or swelling of the testicles, and pain or tenderness in the testicles, abdomen, or groin, may be signs of testicular cancer. Serious complications can be avoided if detected and treated early.
Testicular torsion
Sometimes a structure called the spermatic cord becomes twisted around a testicle. Blood flow is cut off to the testicle, causing pain, swelling or tenderness. Immediate treatment is necessary.
Prostate cancer
This condition is more common in older men. Prostate cancer can be treated through surgery, radiation treatment, or chemotherapy.
Sterility
Males who produce no sperm are sterile. Sterility can be caused by untreated STDs or exposure to pesticides, lead, or dangerous amounts of radiation, and certain drugs. Some types of sterility can be treated by medications or surgery.

14. Caring for the Male Reproductive System
Do a testicular self-examination every month after a warm shower.
Shower or bathe regularly.
Wear protective gear, such as an athletic supporter or cup when playing contact sports.
Visit a health care provider for regular physical checkups.

15. What I Learned Vocabulary Define reproduction. Lesson 3 Review
Reproduction is the process by which living organisms produce others of their own kind.

16. Lesson 3 Review
What I Learned
List What are four problems of the male reproductive system?
Any four: inguinal hernia, testicular cancer, prostate enlargement, prostate cancer, sterility

17. Lesson 3 Review
What I Learned
Name What are two types of gear that protect the male reproductive system of a male athlete?
athletic supporter and cup

18. Lesson 3 Review
What I Learned
Explain How do regular visits to the doctor help to prevent male reproductive problems?
A doctor can screen for reproductive problems before they become serious.

19. Lesson 3 Review
Thinking Critically
Evaluate Why is it important to take care of the male reproductive system?
to prevent injury or illness of the reproductive system, which could cause pain, sterility, or even death

20. Lesson 3 Review
Thinking Critically
Apply Tim has noticed a swelling in one of his testes. He is uncomfortable discussing this problem with his parents, but it is not going away. What steps should Tim take to prevent a serious problem? What advice would you give him about the importance of monitoring his personal health?
Tim should see a doctor about his problem. You might advise Tim that if it is serious, it should be treated, or it is likely to become worse.

21. Chapter 12 Growing and Changing End of Lesson 3
The Male Reproductive System
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