Animal Reproduction

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Author:
yourmomhaslice
ID:
205618
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Animal Reproduction
Updated:
2013-03-07 02:11:32
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bio exam2
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  1. ASEXUAL REPRODUCTION
    •Cells divide – no cell fusion (fertilization)

    • •Offspring genetically identical to one another and parent
    • 3 types
    • –budding
    • –fission
    • –parthenogenesis
  2. •Cells divide – no cell fusion (fertilization)•Offspring genetically identical to one another and parent3 types–budding–fission–parthenogenesis
    ASEXUAL REPRODUCTION
  3. BUDDING
    • •Offspring
    • –forms on parent
    • –breaks free and grows on its own
    • –miniature version of parent

    •Example:hydra
  4. •Offspring –forms on parent–breaks free and grows on its own–miniature version of parent•Example:hydra
    BUDDING
  5. FISSION
    • •Individual splits  or fragments into two or more offspring
    • •Example: Planaria
  6. •Individual splits  or fragments into two or more offspring•Example: Planaria
    Fission
  7. PARTHENOGENESIS
    •Offspring develop from unfertilized eggs
  8. •Offspring develop from unfertilized eggs
    PARTHENOGENESIS
  9. SEXUAL REPRODUCTION
    • •Based on fusion of gametes (egg and sperm)
    • •Offspring genetically different
    • from one another and from parents
    • •Advantage – genetic variation in changing environment

    •Individuals

    –Monoecious or Dioecious

    –Self-fertilization or not
  10. MONOECIOUS
    •Individual produces BOTH eggs and sperm cells

    •Some species self-fertilize others don’t

    •Tapeworms (self-fertilization)

    •Earthworms (NO self-fertilization)
  11. •Individual produces BOTH eggs and sperm cells•Some species self-fertilize others don’t•Tapeworms (self-fertilization)•Earthworms (NO self-fertilization)
    MONOECIOUS
  12. DIOECIOUS
    •Separate male and female individuals

    •Individual produces eggs OR sperm cells not both

    •Usually associated with sexual dimorphism (sexes look different)
  13. •Separate male and female individuals•Individual produces eggs OR sperm cells not both•Usually associated with sexual dimorphism (sexes look different)
    DIOECIOUS
  14. Gametogenesis
    •Production of gametes

    • •Male
    • –sperm: gamete
    • –spermatogenesis: formation of sperm
    • –testis: gonad (location of gametogenesis)

    • •Female
    • –egg: gamete
    • –oogenesis: formation of egg
    • –ovary: gonad (location of gametogenesis)
  15. •Production of gametes•Male–sperm: gamete–spermatogenesis: formation of sperm–testis: gonad (location of gametogenesis)•Female–egg: gamete–oogenesis: formation of egg–ovary: gonad (location of gametogenesis)
    Gametogenesis
  16. SPERMATogenesis
    • Creation of mature sperm
    • 1 cell turns into 4 little spermies
  17. Oogenesis
    Creating female egg
  18. Creation of mature sperm 1 cell turns into 4 little spermies
    SPERMATogenesis
  19. Creating female egg
    Oogenesis
  20. FERTILIZATION
    Sperm and egg fuse to form a diploid zygote

    • –Internal: sperm deposited into female
    • reproductive tract during copulation

    –External: gametes released into environment

    •Zygote develops into embryo
  21. Sperm and egg fuse to form a diploid zygote–Internal: sperm deposited into femalereproductive tract during copulation–External: gametes released into environment•Zygote develops into embryo
    FERTILIZATION
  22. Oviparous species
    • • eggs containing embryos laid
    • outside body and develop independently (fed by yolk)
  23. • eggs containing embryos laidoutside body and develop independently (fed by yolk)
    Oviparous species
  24. Ovoviviparous
    • •eggs containing embryos retained in
    • female (fed by yolk)
    • Eggs hatch up  in that body
  25. •eggs containing embryos retained infemale (fed by yolk)Eggs hatch up  in that body
    Ovoviviparous
  26. Viviparous
    embryos retained in female during development (fed by placenta)
  27. embryos retained in female during development (fed by placenta)
    Viviparous
  28. Testes
    • produce
    • sperm
  29. produce
    sperm
    testes
  30. Epididymis
    • –stores
    • sperm
  31. –stores sperm
    Epididymis
  32. •Accessory fluid production
    3
    –Prostate gland

    –Bulbourethral glands

    –Seminal vesicles
  33. –Prostate gland–Bulbourethral glands–Seminal vesicles
    •Accessory fluid production
  34. •Transport
    sperm
    –Vas deferens (epididymis to prostate etc)

    • –Urethra (exits
    • body)
  35. –Vas deferens (epididymis to prostate etc)–Urethra (exitsbody)
    •Transport sperm
  36. •Oogenesis
    Ovary
  37. Ovary
    oogenesis
  38. Oviduct (fallopian tube)
    Transports egg
  39. Transports egg
    • Oviduct
    • f tube_
  40. –Uterus
    development
  41. development happens where?
    Uterus
  42. –Cervix
    and
    Vagina
    exit
  43. exit
    Cervix and vagina
  44. Puberty hormones
    • GnRH
    • LH
    • FSH
    • testosterone
    • Estrodiol
  45. GnRH
    LH
    FSH
    testosterone
    Estrodiol
    Puberty hormones
  46. 2 phases of ovarian cycle
    follicular and luteal
  47. follicular and luteal
    2 phases of ovarian cycle
  48. Follicular
    phase
    • follicle
    • matures and ovulation occurs
  49. follicle
    matures and ovulation occurs
    follicular phase
  50. •corpus luteum forms from ruptured follicle and degenerates
    • Luteal
    • phase
  51. Luteal
    phase
    •corpus luteum forms from ruptured follicle and degenerates thing dyes and leaves scar
  52. Implantation
    • embryo
    • attaches to uterine lining
  53. embryo
    attaches to uterine lining
    Implantation
  54. hCG
    • What's detected in pregnancy tests
    • –released by embryo

    –stimulates progesterone production (so uterine lining does not degenerate)
  55. What's detected in pregnancy tests–released by embryo–stimulates progesterone production (so uterine lining does not degenerate)
    hCG
  56. Gestation
    •embryo develops in uterus

    • –3
    • trimesters in humans
  57. •embryo develops in uterus

    –3
    trimesters in humans
    Gestation
  58. First
    Trimester
    • When the placenta and amnion form.
    • •Embryonic tissues form
    • –ectoderm,endoderm, mesoderm
    • •Mature tissues develop into organs and organ systems
  59. When the placenta and amnion form.•Embryonic tissues form–ectoderm,endoderm, mesoderm•Mature tissues develop into organs and organ systems
    First trimester
  60. Amnion
    • sac surrounding the embryo
    • –fills with amniotic fluid
    • –provides protective cushion
  61. sac surrounding the embryo–fills with amniotic fluid–provides protective cushion
    Amnion

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