23Hormones06x

23Hormones06x - Vertebrate hormones (hmns) They're, like,...

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Vertebrate hormones ( hmns ) They’re, like, drugs from the body
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Neuroendocrine essentials 1.  released in one place, effects elsewhere 2.  no ducts  (vs.?) ; straight to circulation  3.  cell receptors, affect membrane  receptivity (incl. to other hmns) hr), but sometimes prolonged, systemic  (vs. action potentials) 5.  low concentrations 6.  feedbacks
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Chemistry 1.  Peptides - 3-300 amino acids, water-soluble - short-term changes in cell membrane 2.  Steroids - cholesterol-derived, so across lipid bi- layer - affect internal cell metabolism
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Neuroendocrine glands - >40 hmns - neurohmns from nerve cells; rapid local vs.  other hmns - secretion controlled by nerves or other  hmns
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1.  Testes - androgens incl. T before chemistry) 2.  Ovaries - oestrogens, progesterone (sexual  receptivity in many spp.),  relaxin & Brian Wilson
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- oxytocin & maternal behav. in rodents?
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23Hormones06x - Vertebrate hormones (hmns) They're, like,...

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