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Lesson 2 An essential function of all living things is reproduction, the process by which life continues from one generation to the next. From 300 million.

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Presentation on theme: "Lesson 2 An essential function of all living things is reproduction, the process by which life continues from one generation to the next. From 300 million."— Presentation transcript:

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2 Lesson 2 An essential function of all living things is reproduction, the process by which life continues from one generation to the next. From 300 million to 400 million sperm in each ejaculation, only one can fertilize an ovum. The Male Reproductive System

3 Lesson 2 Describe the parts of the male reproductive system and explain the function of each part. Relate the importance of early detection and warning signs that prompt males of all ages to seek health care for the male reproductive system. Identify situations requiring professional health services for preventive care. Analyze the importance and benefits of abstinence as it relates to the prevention of STDs. In this lesson, youll learn to: Lesson Objectives

4 Lesson 2 In humans, as in many other animal species, reproduction results from the union of two specialized sex cellsone from the male and one from the female. These cells are made by the reproductive system.reproductive system The Reproductive System The Male Reproductive System

5 Lesson 2 Functions of the Male Reproductive System The two main functions of the male reproductive system are the production and storage of sperm and the transfer of sperm to the females body during sexual intercourse.sperm Hormones produced in the pituitary gland stimulate the production of testosterone.testosterone Testosterone initiates physical changes that signal maturity, including broadening of the shoulders, development of muscles and facial and other body hair, and deepening of the voice. Structure and Function of the Male Reproductive System

6 Lesson 2 External Male Reproductive Organs The testes, the penis, and the scrotum are external structures involved in the process of reproduction.testespenisscrotum The penis releases semen.semen At the height of sexual arousal, a series of muscular contractions known as ejaculation may occur. Fertilizationthe joining of a male sperm cell and a female egg cellcan result if ejaculation occurs during sexual intercourse. Structure and Function of the Male Reproductive System

7 Lesson 2 Sperm The scrotum protects sperm by keeping the testes slightly below the normal body temperature. When a male begins to produce sperm, he may experience nocturnal emissions, or ejaculations, that occur when sperm is released during sleep. This is a normal function that relieves the buildup of pressure as sperm begin to be produced during puberty. Structure and Function of the Male Reproductive System

8 Lesson 2 Internal Male Reproductive Organs Although sperm are produced in the testes, which are suspended outside the body, they must travel through several structures inside the body before they are released. These structures include the vas deferens, the urethra, the seminal vesicles, the prostate gland, and Cowpers glands. Structure and Function of the Male Reproductive System

9 Lesson 2 Male Reproductive System Structure and Function of the Male Reproductive System

10 Lesson 2 Caring for the Male Reproductive System Wear protective equipment during physical activities. Practice abstinence to avoid contracting STDs. Perform regular self- examinations for signs of cancer. Get regular checkups by a physician. Care of the Male Reproductive System

11 Lesson 2 Sexually Transmitted Diseases (STDs) Chlamydia and gonorrhea are bacterial infections that cause discharge from the penis and burning upon urination; both conditions can damage reproductive health. Syphilis is another bacterial infection. If left untreated, syphilis can spread and damage internal organs. Genital herpes is a virus that causes periodically occurring blisterlike sores in the genital area. Care of the Male Reproductive System

12 Lesson 2 Conditions Requiring Professional Health Services Inguinal Hernia SterilityTesticular CancerProstate Problems Problems of the Male Reproductive System

13 Lesson 2 An inguinal hernia is a separation of tissue that allows part of the intestine to push into the abdominal wall near the top of the scrotum. Symptoms of inguinal hernia may include a lump in the groin near the thigh, pain in the groin, or in severe cases, partial or complete blockage of the intestine. Surgery is usually necessary to repair the opening in the muscle wall. Inguinal Hernia Problems of the Male Reproductive System

14 Lesson 2 Sterility Sterility in males can result from too few spermfewer than 20 million per milliliter of seminal fluidor sperm of poor quality. Causes of sterility: Environmental hazards Hormonal imbalance Certain medications and use of drugs Some diseases, including STDs Problems of the Male Reproductive System

15 Lesson 2 Testicular Cancer Testicular cancer can affect males of any age but occurs most often in males between the ages of 14 and 40. Males should be prompted to seek health care if they notice any warning signs, such as a painless lump or swelling in either testicle or pain or discomfort in a testicle or in the scrotum. With early detection most testicular cancer is treatable through surgery, radiation therapy, or chemotherapy. Problems of the Male Reproductive System

16 Lesson 2 Prostate Problems The prostate gland can become enlarged as a result of an infection, a tumor, and age-related problems. Symptoms may also indicate more serious conditions, including prostate cancer. Prostate cancer screening is usually done during routine physical exams for males over age 50. Early detection increases the chance of survival. Treatment includes surgery, radiation, and hormone therapy. Problems of the Male Reproductive System

17 Lesson 2 Q. The male sex hormone is known as _____. 1. scrotum 2. penis 3. testosterone 4. semen Choose the appropriate option. Quick Review

18 Lesson 2 A. The male sex hormone is known as testosterone. Click Next to attempt another question. Quick Review - Answer

19 Lesson 2 Provide a short answer to the question given below. Click Next to view the answer. Quick Review Q. What is the function of the testes?

20 Lesson 2 A. The function of the testes is to produce sperm and secrete testosterone. Click Next to attempt another question. Quick Review - Answer

21 Lesson 2 Provide a short answer to the question given below. Q. What are the symptoms of testicular cancer? Identify conditions requiring professional health services for preventive care. Click Next to view the answer. Quick Review

22 Lesson 2 A. Males should be prompted to seek health care if they notice any warning signs or symptoms of testicular cancer, such as a painless lump or swelling in either testicle or pain or discomfort in a testicle or in the scrotum. Click Next to attempt another question. Quick Review - Answer

23 Lesson 2 Analyze the importance and benefits of abstinence as it relates to the prevention of STDs. How can problems related to STDs affect the male reproductive system? Analyze the following. Quick Review

24 Lesson 2 A. Correct! The male sex hormone is known as testosterone. Click Next to attempt another question. Quick Review - Answer

25 Lesson 2 You have answered the question incorrectly. Go back to try again, or click Next to view the correct answer. Quick Review - Answer

26 Lesson 2 In humans, as in many other animal species, reproduction results from the union of two specialized sex cellsone from the male and one from the female. These cells are made by the reproductive system.reproductive system The Reproductive System The reproductive system is a system of organs involved in producing offspring. The Male Reproductive System

27 Lesson 2 The two main functions of the male reproductive system are the production and storage of sperm and the transfer of sperm to the females body during sexual intercourse.sperm Hormones produced in the pituitary gland stimulate the production of testosterone.testosterone Testosterone initiates physical changes that signal maturity, including broadening of the shoulders, development of muscles and facial and other body hair, and deepening of the voice. Functions of the Male Reproductive System Sperm are the male reproductive cells. Structure and Function of the Male Reproductive System

28 Lesson 2 The two main functions of the male reproductive system are the production and storage of sperm and the transfer of sperm to the females body during sexual intercourse.sperm Hormones produced in the pituitary gland stimulate the production of testosterone.testosterone Testosterone initiates physical changes that signal maturity, including broadening of the shoulders, development of muscles and facial and other body hair, and deepening of the voice. Functions of the Male Reproductive System Testosterone is the male sex hormone. Structure and Function of the Male Reproductive System

29 Lesson 2 The testes, the penis, and the scrotum are external structures involved in the process of reproduction.testespenisscrotum The penis releases semen.semen At the height of sexual arousal, a series of muscular contractions known as ejaculation may occur. Fertilizationthe joining of a male sperm cell and a female egg cellcan result if ejaculation occurs during sexual intercourse. External Male Reproductive Organs The testes are two small glands that produce sperm. Structure and Function of the Male Reproductive System

30 Lesson 2 The testes, the penis, and the scrotum are external structures involved in the process of reproduction.testespenisscrotum The penis releases semen.semen At the height of sexual arousal, a series of muscular contractions known as ejaculation may occur. Fertilizationthe joining of a male sperm cell and a female egg cellcan result if ejaculation occurs during sexual intercourse. External Male Reproductive Organs The penis is a tube-shaped organ that extends from the trunk of the body just above the testes. Structure and Function of the Male Reproductive System

31 Lesson 2 The testes, the penis, and the scrotum are external structures involved in the process of reproduction.testespenisscrotum The penis releases semen.semen At the height of sexual arousal, a series of muscular contractions known as ejaculation may occur. Fertilizationthe joining of a male sperm cell and a female egg cellcan result if ejaculation occurs during sexual intercourse. External Male Reproductive Organs The scrotum is an external skin sac. Structure and Function of the Male Reproductive System

32 Lesson 2 The testes, the penis, and the scrotum are external structures involved in the process of reproduction.testespenisscrotum The penis releases semen.semen At the height of sexual arousal, a series of muscular contractions known as ejaculation may occur. Fertilizationthe joining of a male sperm cell and a female egg cellcan result if ejaculation occurs during sexual intercourse. External Male Reproductive Organs Semen is a thick fluid containing sperm and other secretions from the male reproductive system. Structure and Function of the Male Reproductive System

33 Lesson 2 SterilitySterility in males can result from too few spermfewer than 20 million per milliliter of seminal fluidor sperm of poor quality. Causes of sterility: Environmental hazards Hormonal imbalance Certain medications and use of drugs Some diseases, including STDs Sterility Sterility is the inability to reproduce. Problems of the Male Reproductive System


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