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Male Reproductive System

Explore the functions and changes of the male reproductive system, including the production and transfer of sperm. Learn about the importance of staying healthy and detecting potential problems such as sterility and cancer.

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Male Reproductive System

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  1. Male Reproductive System

  2. Before we begin… • We need to be mature and respectful during this unit… • I guarantee you will have questions…ASK! • Why do we need to know the Male and Female Reproductive Systems?

  3. Functions • Produce and store sperm • Sperm – male reproductive cell • Transfer sperm to female body during sexual intercourse – the act of the male penis being inserted into the female vagina • Reproduce!!!

  4. How the male body changes • During early teen years (12-15) the body starts to produce testosterone – the male sex hormone. • Testosterone triggers many physical changes • Broad shoulders • Development of muscles • Facial/body hair • Deep Voice

  5. These changes are known as puberty. • After puberty begins, a male is capable of producing sperm for the rest of his life.

  6. External Reproductive Organs • Testes – two small glands that secrete testosterone and produce sperm • Scrotum – sac which houses the testes. • Penis – tube-shaped organ that extends from the body just above the testes

  7. The male penis • During arousal, blood flow to the penis increases - vasocongestion. • This causes an erection – an enlargement of the penis • Body’s preparation for sexual intercourse

  8. The male penis… • When penis becomes erect, semen can be ejected from the body • Semen – thick fluid containing sperm and other secretions • A series of muscular contractions occurs, thus creating an ejaculation – expulsion of semen from the male penis. • Nocturnal Emissions may occur – ejaculation that occurs during sleep. This is perfectly normal!

  9. The male Penis… • Foreskin – thin, loose flap is skin that covers the tip of the penis • Usually removed at birth • This is known as circumcision

  10. Circumcision

  11. Internal Organs • Epididymis – tube above the testis in which sperm is matured and stored • Vas Deferens – long tube which carries sperm to an organ called the seminal vesicle

  12. Internal Organs • *Prostate and *Cowpers glands – secretions from these glands combine with the sperm to form semen. • *Seminal Vesicle – produces fluid that mixes with sperm to nourish the sperm and make it more mobile • * These three are known as accessory glands. • Semen exits the body through the urethra

  13. Staying Healthy • Bath regularly • Wear Protective Equipment • Practice Abstinence – not having sex before marriage to avoid STD’s – sexually transmitted disease • Perform self-exams • Get regular check-ups!

  14. Staying Healthy • Bath regularly • All males should wash pubic area with soap and water • Uncircumsized males need to pull back foreskin and clean

  15. Problems • Sterility – inability to reproduce • Result of too few sperm or sperm of poor quality • May be caused by: • Exposure to chemicals, lead, x-rays, radiation • Hormonal imbalances, STDs, steroids!

  16. Problems • Testicular Cancer • Occurs mostly between ages of 14-40 • Mostly treatable with early detection

  17. Problems • Prostate Cancer • The prostate gland can become enlarged due to tumors • The earlier you detect this, the greater the chance of recovery.

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