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Biomed Final
Endocrine to Reproductive
Question | Answer |
---|---|
functions of hormones? | metabolism: blood sugar biological clock contraction of cardiac and smooth muscle some immune function growth and development reproduction |
what is down regulation? | hormone is present in excess, the number of target cell receptors may decrease makes the target cell less sensitive to a hormone |
what is up regulation? | when a hormone is deficient, the number of receptors may increase makes the target cell more sensitive to a hormone |
what are paracrine? | local hormones that act on neighboring cells |
what are autocrine? | hormones that act on the same cell that secreted them |
what are the lipid soluble hormones? | steroid hormones thyroid hormones nitric oxide |
what are the water soluble hormones? | amine hormones peptide hormones eicosanoid hormones |
what is permissive effect? | action of some hormones on target cells require a simultaneous or recent exposure to a second hormone can either increase the amount of receptors on a target cell or promote synthesis of an enzyme required for expression |
what is a synergistic effect? | when the effect of two hormones aging together is greater or more extensive than the effect of each hormone acting alone |
what are special about eicosanoid hormones? | derived from fat but they are water soluble |
what are effective oral medications as hormones? | steroid hormones and thyroid hormones (lipids) |
what are NOT effective oral medications as hormones? | insulin, peptide and protein hormones because they are broken down by digestion (water soluble) |
what is the cascade effect of water soluble hormones getting into the cell | hormone, G protein, adenylate cyclase, cAMP, protein kinase |
what are some second messengers? | calcium ions, cGMP, inositol triphosphate (IP3) or Diacyl glycerl (DAG) |
what is another name for anterior pituitary? | adenohypophysis |