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Animal Reproduction

Animal Reproduction. Animal Reproduction. Advantage of sexual reproduction: Advantage of asexual reproduction:. Animal Reproduction. Advantage of sexual reproduction: diversity Advantage of asexual reproduction: efficiency. Anatomy:. testes seminiferous tubules epididymis vas deferens

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Animal Reproduction

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  1. Animal Reproduction

  2. Animal Reproduction Advantage of sexual reproduction: Advantage of asexual reproduction:

  3. Animal Reproduction Advantage of sexual reproduction: diversity Advantage of asexual reproduction: efficiency

  4. Anatomy: testes seminiferous tubules epididymis vas deferens seminal vesicles prostate gland bulbourethral glands semen glans prepuce (foreskin) follicle corpus luteum oviduct (fallopian tube) uterus endometrium cervix hymen labia minora & majora clitoris Bartholin’s glands

  5. Gametogenesis: Spermatogonia become primary spermatocytes Meiosis produces four sperm cells Maturation in the epididymis takes 65-75 days Three million sperm manufactured each day. • Oogonia become primary oocytes, present at birth, arrested in prophase I • Each month, one secondary oocyte is released, arrested at Metaphase II • Entry of sperm triggers completion of meiosis II.

  6. Menstrual Cycle

  7. Menstrual Cycle

  8. hypothalamus follicle uterus menstruation pituitary

  9. POSITIVE FEEDBACK hypothalamus follicle GnRH uterus pituitary

  10. POSITIVE FEEDBACK hypothalamus follicle GnRH uterus pituitary FSH & LH

  11. POSITIVE FEEDBACK hypothalamus estrogen follicle GnRH estrogen uterus thickens pituitary FSH & LH

  12. POSITIVE FEEDBACK hypothalamus estrogen follicle GnRH estrogen uterus thickens pituitary FSH & LH

  13. POSITIVE FEEDBACK hypothalamus estrogen follicle GnRH estrogen uterus thickens pituitary FSH & LH

  14. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH & LH

  15. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH & LH

  16. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH & LH

  17. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH & LH

  18. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH & LH

  19. POSITIVE FEEDBACK estrogen hypothalamus follicle GnRH estrogen uterus thickens pituitary FSH &LH

  20. POSITIVE FEEDBACK estrogen hypothalamus Ovulation! follicle GnRH estrogen uterus thickens pituitary FSH &LH

  21. NEGATIVE FEEDBACK estrogen hypothalamus corpus luteum follicle GnRH estrogen uterus pituitary FSH &LH

  22. NEGATIVE FEEDBACK estrogen hypothalamus corpus luteum follicle GnRH estrogen ovum uterus pituitary FSH &LH

  23. NEGATIVE FEEDBACK estrogen & progesterone hypothalamus corpus luteum follicle GnRH estrogen & progesterone ovum uterus develops endometrium pituitary FSH &LH

  24. NEGATIVE FEEDBACK estrogen & progesterone Stop! hypothalamus corpus luteum follicle GnRH estrogen & progesterone ovum uterus develops endometrium pituitary FSH &LH

  25. NEGATIVE FEEDBACK estrogen & progesterone Stop! hypothalamus corpus luteum follicle GnRH estrogen & progesterone ovum uterus develops endometrium pituitary FSH &LH

  26. NEGATIVE FEEDBACK estrogen & progesterone Stop! hypothalamus corpus luteum follicle GnRH estrogen & progesterone ovum uterus develops endometrium pituitary FSH &LH

  27. NEGATIVE FEEDBACK estrogen & progesterone hypothalamus corpus luteum follicle GnRH estrogen & progesterone ovum uterus menstruation pituitary FSH &LH

  28. BACK TO THE BEGINNING hypothalamus follicle GnRH uterus menstruation pituitary

  29. Reproductive Technologies vasectomy condom Nonoxol-9 proper use storage mishaps penile implants Viagra oral contraceptives progesterone-only Norplant Depo-Provera tubal ligation diaphragm MAP IUD RU486

  30. Reproductive Technologies

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