neuro part 1 parasympathetic.txt

Parasympathetic nervous system
- controls activities that conserve energy output
- major neurotransmitter = acetylcholine
Drugs that mimic effect of acetylcholine
- cholinergic receptor agonists
- parasympathomimetics
Drugs that block the effect of acetylcholine
- anticholinergics
- cholinergic or muscarinic receptor antagonists
- parasympatholytics
- antispasmotics
Two types of cholinergic receptors
- nicotinic acetylcholine receptors (NAChRs) (nicotine)
- muscarinic acetylcholine receptors (mAChRs) (muscarine)
Effects of sympathomimetics
- increase in blood pressure
- increase in heart rate
- relaxes bronchioles
- dilates pupils
- relaxes urinary bladder
- relaxes GI muscle
Effects of parasympathomimetics (direct acting)
- decrease blood pressure
- decrease heart rate
- constrict bronchioles
- constrict pupils
- contract urinary bladder
- increase peristalsis
Indirect-acting cholinesterase inhibitors

effects similar to direct-acting
Effects of sympatholytics
- decrease heart rate
- decrease blood pressure
- constrict bronchioles
Effects of parasympatholytics
- increase heart rate
- decrease mucus secretions
- decrease gastrointestinal motility
- increase urinary retention
- dilate pupils

Author

mhunger

178651

Card Set

neuro part 1 parasympathetic.txt

Description

parasympathetic system

Updated

2012-10-21T02:08:32Z

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