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Reproduction

Human. Reproduction. Sexual Reproduction. testis. ovary. meiosis. meiosis. sperms. eggs (ova). fertilization. zygote. embryo. fetus. baby. Male Reproductive System. What is a vasectomy?. vas deferens (sperm duct). epididymis. testis. Testes.

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Reproduction

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  1. Human Reproduction

  2. Sexual Reproduction testis ovary meiosis meiosis sperms eggs (ova) fertilization zygote embryo fetus baby

  3. Male Reproductive System What is a vasectomy? vas deferens (sperm duct) epididymis testis

  4. Testes • For production of male gametes (sperms) • For production of male sex hormones

  5. Epididymis • For temporarily storage of sperms • During copulation, muscles of epididymis contract to release sperms

  6. Testis and epididymis epididymis vas deferens (sperm duct) sperm tubules

  7. Male Reproductive System seminal vesicle secrete seminal fluid prostate gland Cowper’s gland

  8. Functions of Seminal Fluid • To provide a medium for the sperms to swim • To activate and nourish the sperms • To neutralize the acidity in the female reproductive tract Seminal Fluid Semen Sperm +

  9. Male Reproductive System urethra penis

  10. Female Reproductive System oviduct ovary uterus cervix vagina

  11. Functions of Ovary • For production of female gametes (ova/eggs) and production of female sex hormones

  12. Oviduct • Carries the ovum forward by • the beating action of the cilia on its inner surface • the contraction of muscles of oviduct Cick here

  13. Menstrual Cycle • Once in about 28 days • The uterine lining becomes thickened 14 days after ovulation to prepare for the fertilized ovum to implant in it

  14. Video on change in uterine lining Menstrual Cycle • Day 6 - 14 • Lining becomes thicker with increased blood supply • Day 14 : ovulation • Day 14 - 28 • Lining remains thick to ready for implantation of fertilized ovum • Day 28 • No implantation of fertilization ovum • Uterine lining breaks down; menstruation starts • Day 1 - 5 • Menstruation starts • Uterine lining decreases in thickness to a minimum

  15. Hormones HormoneMaleFemale • GnRH FSH/LH release from Ant. Pit • FSH Spermatogenesis Follicle growth • LH Testosterone Secretion Follicle release estrogen • Estrogen 2nd sex characteristics Long Bone growth General anabolic effects Female sex drive Skin Hydration- Increase HDL

  16. Hormones • Progesterone: prepares uterus for pregnancy • Testosterone: suppress LH and GnRH male 2nd characteristics Stimulate growth spurt increase bone and muscle growth libido and aggressiveness

  17. Human Chorionic Gonadotropin • promotes the maintenance of the corpus luteum during the beginning of pregnancy • Progesterone secretion- maintains uterus • Maybe morning sickness • Can also be used clinically to induce ovualtion • Can be found in blood and urine • Pregnancy test • Diet Use

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