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7 Cards in this Set
- Front
- Back
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controls on GH? TSH? Prolactin?
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GH: GHRH +, somatostatin - (also insulin like growth factor I and increased glucose levels decrease it)
TSH: TRH +, somatostatin - Prolactin: TRH +, dopamine - |
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GH effect?
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-stimulates aa uptake and protein synthesis (growth, duh)
-anti-insulin effect |
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acromegalics. may see what?
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DM via GH secretion (anti-insulin effect on carb metabolism)
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TRH stimulation test
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-see TSH def (low T4 'thyroxin')
- need to determine if hypothalmus or pituitary problem - give TRH (the hypothalamic hormone) |
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Prolactin action?
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- lactation
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GnRH
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from hypothalamus, LH and FSH from ant pituitary
- LH to Leydig cells (testosterone for spermatogenesis, etc) - FSH to sertoli cells (MIH, Inhibin (feedback inhibs hypothalamic GnRH) - FSH to seminiferious tubules (spermatogenesis) |
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Testosterone from?
MIH from? Inhibin from? action? |
testosterone: Leydig cells via LH stimualtion (from ant pit via GnRH from hypothal)
Inhibin: from sertoli cells via FSH from ant pit. neg feedback to hypothal (dec GnRH) MIH: sertoli cells via FSH from ant pit |
