BIOL 404-Exam 4-Reproduction 13

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kyleannkelsey
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216176
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BIOL 404-Exam 4-Reproduction 13
Updated:
2013-04-27 19:10:32
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BIOL 404 Exam Reproduction 13
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BIOL 404-Exam 4-Reproduction 13
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  1. What hormone provides negative feedback on FSH production in the anterior pituitary but has no effect on LH levels?
    Inhibin
  2. What is the general action of the Granulosa cells during the follicular stage?
    Nourish the oocyte
  3. What cells nourish the oocyte during the follicular stage?
    The Granulosa
  4. What paracrine action do Granulosa cells produce?
    The release estrogens which promote growth in Theca cells
  5. What cells produce a stimulus for the Theca cells to grow?
    Granulosa cells producing estrogen
  6. Where are Antral fluids found?
    In developing secondary follicle
  7. What cells help in the production of antral fluids?
    Granulosa cells
  8. Receptors for what hormones are found on Granulosa cells?
    FSH and Estrogens
  9. What cells in the female gonads have FSH and estrogen receptors?
    Granulosa
  10. During what time period do Luteinizing hormone receptors develop on the granulosa cells?
    Days 7-14
  11. What receptors develop on Granulosa cells during days 7-14?
    Luteinizing hormone receptors
  12. What cells produce Inhibin?
    Granulosa cells
  13. What causes the spike in LH and FSH at ovulation?
    Large amounts of positive feedback from estrogens acting on the hypothalamus and anterior pituitary
  14. What is the effect of large amounts of estrogen providing positive feedback on the hypothalamus and anterior pituitary?
    • Spike in LH and FSH
    • Ovulation
  15. What hormones are produced by the Corpus luteum?
    Progesterone and estrogen
  16. What provides negative feedback on the anterior pituitary and hypothalamus causing a drop in Estrogens and Progesterone?
    Estrogen and Progesterone
  17. What time period does positive feedback play a role in teh ovarian cycle?
    During ovulation
  18. LH causes Theca cells to produce androgens an what else?
    Grow
  19. Progesterone is under the control of what other hormone?
    LH
  20. What causes the membrane rupture that facilitates ovulation?
    • LH causes granulosa cells to produce prostaglandins
    • Prostaglandin enzymes break down the membrane facilitating ovulation
  21. What drives the change in the endometerium thickness during the first 14 days of the menstrual cycle?
    Estrogen
  22. What drives the change in endometrium during days 15-28 of the menstrual cycle?
    Progesterone
  23. The endometrium under the pressures of progesterone has what characteristics?
    Secretory
  24. The endometrium under the pressure of only estrogen has what can be described as what?
    Proliferative

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