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Male Reproductive System

Male Reproductive System. Male Reproductive Systems : For Discussion: True or False?. 1. Sperm cells in the female reproductive tract are considered by a woman ’ s immune system to be “ non-self ” and are attacked by her white blood cells. True.

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Male Reproductive System

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  1. Male Reproductive System

  2. Male Reproductive Systems: For Discussion: True or False? 1. Sperm cells in the female reproductive tract are considered by a woman’s immune system to be “non-self” and are attacked by her white blood cells. True 2. Sperm cells are considered by a man’s immune system as “non-self” and are attacked by a man’s own white blood cells. True • A woman, in her reproductive lifetime, has the potential to produce about 500,000 eggs, but she will only ever use about 500. True 4. The average man, in a single average ejaculation of semen, emits more reproductive cells than the average woman produces in her reproductive lifetime. True, about 420 million per average ejaculate, he produces about 4 million/hour 5. Only one sperm may fertilize an egg in humans. True 6. Only about 1 in 42,000 sperm, or 0.00238 % of the sperm in an average ejaculation reach the egg. True

  3. MALE REPRODUCTUVE CELL • SPERM

  4. The Male Reproductive System Urinary bladder Seminal vesicle Penis Ejaculatory duct Vas deferens Prostate gland Urethra Cowper’s gland Epididymus Testes Scrotum

  5. Testicles • Produce Sperm • Millions released during ejaculation • Life span is less then 72 hours • Produce Testosterone (Male Hormone) • Creates secondary sex characteristics • Hair • Lower voice • Larger muscles • Must maintain a certain temperature

  6. - Maintains temperature Scrotum

  7. Epididymis - Stores sperm until matured and needed for ejaculation

  8. Vas Deferens -Pathway of sperm and semen during ejaculation

  9. Penis • Male sex organ • Delivers semen out of the body • urination • Erection • Sexual arousal • Increased blood flow to tissue • Elongates and makes more rigid

  10. The Penis Figure 28.11

  11. The Male Reproductive System in Anterior View Figure 28.3

  12. Found in the penis • Tube that carries urine from bladder • Tube used in ejaculation Urethra

  13. Accessory glands • Cowpers Gland • secrete a lubricating fluid • (pre-cum) • Prostate Gland • Seminal Vesicle

  14. -Secrete a sugary fluid (fructose) that provides energy to the sperm Seminal Vesicle

  15. Prostate Gland • -Secrete a chemical fluid that helps sperm live longer

  16. The Male Reproductive System Figure 28.1

  17. Quiz • Where is sperm stored until needed for ejaculation? • What controls the temperature of testicles? • What is the name of the male sex cell? • What part of the male reproductive system release testosterone? • Name one gland that adds fluid to sperm to make semen.

  18. Quiz- Answers 1. Where is sperm stored until needed for ejaculation? Epididymis 2. What controls the temperature of testicles? Scrotum 3. What is the name of the male sex cell? Sperm 4. What part of the male reproductive system release testosterone? Testes 5. Name one gland that adds fluid to sperm to make semen. Prostate, or Cowper’s or Seminal Vesicles

  19. Virtual diagram of the male reproductive system

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