neuro part 1 parasympathetic.txt

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Author:
mhunger
ID:
178651
Filename:
neuro part 1 parasympathetic.txt
Updated:
2012-10-20 22:08:32
Tags:
neuro part parasympathetic system
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Description:
parasympathetic system
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  1. Parasympathetic nervous system
    • controls activities that conserve energy output
    • major neurotransmitter = acetylcholine
  2. Drugs that mimic effect of acetylcholine
    • cholinergic receptor agonists
    • parasympathomimetics
  3. Drugs that block the effect of acetylcholine
    • anticholinergics
    • cholinergic or muscarinic receptor antagonists
    • parasympatholytics
    • antispasmotics
  4. Two types of cholinergic receptors
    • nicotinic acetylcholine receptors (NAChRs) (nicotine)
    • muscarinic acetylcholine receptors (mAChRs) (muscarine)
  5. Effects of sympathomimetics
    • increase in blood pressure
    • increase in heart rate
    • relaxes bronchioles
    • dilates pupils
    • relaxes urinary bladder
    • relaxes GI muscle
  6. Effects of parasympathomimetics (direct acting)
    • decrease blood pressure
    • decrease heart rate
    • constrict bronchioles
    • constrict pupils
    • contract urinary bladder
    • increase peristalsis
  7. Indirect-acting cholinesterase inhibitors
    effects similar to direct-acting
  8. Effects of sympatholytics
    • decrease heart rate
    • decrease blood pressure
    • constrict bronchioles
  9. Effects of parasympatholytics
    • increase heart rate
    • decrease mucus secretions
    • decrease gastrointestinal motility
    • increase urinary retention
    • dilate pupils

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