Duke PA Physiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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If the breast is not expressing estrogen, but only progesterone, would you put someone on tamoxifen? | no
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What happens are 5 years of tamoxifen? | tamoxifen switches and becomes a promoter for the estrogen receptor - acts as an agonist
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What do you put patients on after tamoxifen? | aromatase inhibitors - prevents conversion of androgen to estrogen
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Describe the path from the ovary to the uterus | fimbria, infundibulum, isthmus, ampulla, uterus
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What are you trying to block with oral contraceptives? | LH surge, prevent release of egg
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Polycystic ovaries | No LH surge - follicles all over ovary, high androgen level (from the adrenal)
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DHEA from the adrenal | high levels of DHEA (weak androgen) erase pulsatility of GnRH, critical for timing in cycles
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How do you treat polycystic ovaries? | hormone control of cycles
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What will the level of FSH be in the post-menopausal female? | increased - negative feedback from estrogen is gone
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In a young boy diagnosed with precocious puberty, puberty is best delayed by administration of a long-lasting what? | GnRH receptor agonist
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Why give GnRH for precocious puberty? | shuts down the male axis through giving high endogenous ligand, non-pulsatile - downregulat receptor
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