Membrane hormonal receptors
produces changes in cells
Usually fast acting and short duration
Intracellular hormonal receptors
produces changes in DNA --> mRNA production
Usually slow response time and longer duration
Chemical nature of hormones
Amino acid derivatives – thyroxine and NE
Proteins and peptides
HRF’s and HIF’s - regulate secretions of anterior pituitary
ADH and OT – produced by nerve cells in hypothalamus and delivered via axonal transport to the posterior pituitary.
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