04-Hormones II - HormonesII: Thesteroidhormones...

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Hormones II:  The steroid hormones The Adrenal Gland Hormones for responding to stress Gonadal Sex Hormones Steroid Hormones Produced in the Testes and Ovaries Hormones in Invertebrates Regulation of Insect Development
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 Released from the pineal gland at night.  Synthesis and release are controlled by the hypothalamus. In many mammals it is involved in regulating seasonal cycles that are controlled by the length of the daily  photoperiod (reproduction, coat color, fat accumulation, hibernation, etc.)   [photoperiodism] Siberian Hamsters from long days/short nights  (summer) and short days/long nights  (winter).        Testes from Long-day and Short-day hamsters In humans it’s function is not yet understood, though in the popular press it is often touted as a cure for  everything from insomnia to Alzheimer’s disease. 2
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Steroid Hormones are Derived from Cholesterol The primary sources for the steroid hormones are the adrenal glands and the gonads  (ovaries, testes) Adrenal Glands      -cortex- Gonads 3
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04-Hormones II - HormonesII: Thesteroidhormones...

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