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Male Reproductive System

Male Reproductive System. 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?. Functions. Produce and store sperm Sperm – male reproductive cell

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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!!! When a sperm (male) egg (female) join….called Fertilization

  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 • Commonly called secondary sex characteristics • These changes are known as puberty. After puberty begins, a male is capable of producing sperm for the rest of his life.

  5. Larger muscles Longer, heavier bones Thicker, tougher skin Deeper voice Growth of body hair Development of pubic hair Greater muscle mass V-shaped torso Enlargement of penis, scrotum, and testes Increased metabolic rate Sex drive Ejaculation of semen Secondary Sex Characteristics

  6. Male Diagram

  7. External Reproductive Organs • Testes – two small glands that secrete testosterone and produce sperm

  8. Scrotum • Thin walled, muscular pouch which holds and protects the testes • Controls the temperature of the sperm (1°-2° below body temperature) through muscular contraction and relaxation

  9. Epididymis • Epididymis – tube above the testis in which sperm is matured and stored

  10. Vas Deferens Vas Deferens – long tube which carries sperm to an organ called the seminal vesicle

  11. Seminal Vesicles • *Seminal Vesicle – produces fluid that mixes with sperm to nourish the sperm and make it more mobile

  12. Prostate Gland • A small gland that surrounds the urethra at the base of the bladder • Releases an alkaline solution to protect the sperm from the slightly acidic environment of the vaginal tract • Secretes a milky fluid that makes up the majority of semen

  13. Cowper’s Gland • Lubricates the urethra and neutralizes the acid content • * These three are known as accessory glands Seminal Vesicle, Prostate, Cowpers)

  14. Cowper’s Gland

  15. Urethra • A small tube that extends from the bladder as well as from each vas deferens through the penis to the outside of the body • Carries both urine and semen out of the body through the penis

  16. Penis • The external reproductive organ composed of a spongy tissue that contains many blood vessels • As a result of increased blood flow the penis becomes enlarged and erectDuring arousal, blood flow to the penis increases - vasocongestion. • This causes an erection – an enlargement of the penis • Body’s preparation for sexual intercourse

  17. 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!

  18. The path of sperm cells from production to release 4 7 5 6 Cowper’s Gland 3 2 1

  19. The path of sperm cells from production to release • Sperm cells are produced in the (1)testes • Stored in the (2)epididymis • Travel through the (3)vas deferens • Combine with fluid from the (4)seminal vesicles • Combine with fluid from the (5)prostate gland • Combine with fluid from the (6)Cowper’s gland • Now called semen, travels through the (7)urethra in the penis • Leaves the body through the opening in the penis during ejaculation

  20. 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

  21. Circumcision

  22. Keeping the male reproductive system 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!

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

  24. Here’s what you can do… • . Perform self-exams • Males should gently message each testicle to detect any bumps or abnormalities • Do this at least once a month • Looking for signs of testicular cancer! • Earlier the detection, the easier it is to treat!

  25. Problems of the male reproductive system • 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!

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

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

  28. Problems • Inguinal Hernia- weakness of the wall of the inguinal canal coming through the abdominal cavity.

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