ch 32.txt

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Anonymous
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222774
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ch 32.txt
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2013-06-07 02:17:29
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32 principles life
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ch 32 principles of life
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  1. This type of reproduction is best in a stable environment when mates are hard to find
    Asexual
  2. Type of reproduciton in which new individuals arise as outgrowths
    Budding
  3. Separation of parent into two individuals of equal size
    Fission
  4. A type of asexual reproduction some sponges, cnidarians and bristle worms engage in
    Fragmentation and regeneration
  5. The egg develops without being fertilized
    Parthenogenesis
  6. The offspring of parthenogenesis may be
    Diploid or haploid (bees, wasps, ant)
  7. Asexual reproduction without males; doubling of chromosomes
    Parthenogenesis
  8. This kind of reproduction ensures genetic recombination and variation ; ability to adapt or eliminate harmful genes/mutations
    Sexual reproduction
  9. Simultaneous male and female sex organs
    Hermaphroditism
  10. These can sometimes self fertilize
    Hermaphrodites
  11. Type of sexual reproduction that produces m/f gametes at dif stages
    Sequential
  12. Egg laying
    Oviparous
  13. Live birth
    Viviparous
  14. Most ____ have separate sexes and complex reproductive system. The female stores sperm
    Insects
  15. Each ovary is packed with ____ containing oocytes
    Ovary
  16. Sperm mature in
    Epididymus
  17. Sperm are formed in
    Seminiferous tubules
  18. Voyage for ejaculation (EVeryCOW plays with seminal vesicles)
    Epididymus, vas deferens, cowper's glands, prostate and sem vesicles and urethra
  19. Spongy tissue in penis
    Corpus spongiosum, copus cavernosum
  20. The hypothalamus produces ________.
    Gonadotropin releasing hormone
  21. GRH stimulates the _____ to produce FSH and LH.
    Pituitary. In both males and females
  22. FSH/LH release in women causes
    Estradiol,progesterone
  23. FHS/LH in men causes
    Androgens
  24. Order of sperm life
    Spermatogonium, primary spermatocyte, sndary spermatocyte, spermatids, sperm
  25. For each meiotic division of male germ cell, ___ sperm are created
    4
  26. In males, ____ cells secrete testosterone/androgens
    Leydig
  27. In males, ____ cells nourish developing sperm
    Steroli
  28. Testosterone production is controlled by ______ feedback
    Negative
  29. ____ and sex hormones regulate reproductive time periods
    Gonadotropins
  30. When female mammals are in heat, they have an ___ cycle
    Estrous
  31. In estrous cycle, endometrium is _____ if no pregnancy
    Reabsorbed
  32. Part 1 of progesterone cycle
    After ovulation, follicle is 'corpus luteum'; secrete progesterone/estrodiol, increases vascularity of endometrium, feedback to hypothal and inhibits GRH
  33. Part 2 of progesterone cycle
    Grh drops, fsh/lh drop, follicle dvlpmnt stops, if no pregnancy, CL regresses and progesterone stops.
  34. Part 3 of progesterone cycle.
    Progest. Stops, inhibition of hyptothal/grh stops, grg stimulates fsh/lh, follicules develop and here we go again
  35. 5 stages of early development
    Ovulation, fert, cleavage, blastocyst (hollow ball), implantation.
  36. Placenta is formed by
    Cells of trophoblast + cell of endometrium
  37. During end of pregnancy, when progesterone production drops, it makes uterus more
    Irritable; and it secretes oxytocin

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