usmle Randoms

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  1. Which cell types are derived from Neural Crest cells?
    • Melanocytes
    • Odontocytes
    • Parafollicular cells
    • thyroid and laryngeal cartilage
    • Chromaffin cells
    • ANS
    • CNS
    • pia and arachnoid mater
    • celiac ganglia
    • Schwann cells
    • Aorticopulmonary septum
    • bones of skull
  2. what 2 substances block NE release from terminal?
    • guanethidine- anti HTN
    • Bretylium-antiarrythmic
  3. what 3 things enhance NE release form terminal
    • Amphetamines
    • Ca+2
    • Tyramine
  4. what 2 things block NE reuptake into terminals
    • cocaine
    • TCAs- depression
  5. what drug inhibits tyrosine hydroxylase?
    mettyrosine
  6. what blocks choline uptake into Ach neuron terminal ?
    hemicholium
  7. what drug blocks choline acetyltransferase?
    vesamicol
  8. what toxin enhances Ach release from terminals vs block Ach release?
    • black widow spider enhances Ach release
    • botulinum blocks Ach release-->flaccid paralysis
  9. Wwhats required for a molecule to enter nucleus through nuclear pore?
    Nuclear localization signal: 4-8aa, lysine-arginine-proline
  10. what hormone is responsible for fetal production of surfactnct and fetal lung maturation?
    cortisol..made by adult zone of fetal adrenals in late gestation

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Author:
n13
ID:
157697
Filename:
usmle Randoms
Updated:
2012-06-07 23:27:29
Tags:
random usmle cards
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usmle randoms
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