Term
| Sympathetic Nervous System |
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Definition
*Fight or Flight*
- Regulation of CV fxn
- Mobilize glucose from glycogen stores
- Dilate pupils (visual acuity and see far distances)
- Bronchodilation (improve oxygenation)
- Regulate temp (vasoconstriction or vasodilation of cutaneous blood vessels)
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Term
| Sympathetic NS: Functional name: |
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Definition
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Term
| Sympathetic NS: Primary neurotransmitters (NT's) |
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Definition
- Norepinephrine
- Epinephrine
- Dopamine
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Term
| Sympathetic NS: Receptor Sites |
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Definition
- Alpha1
- (Alpha2)
- Beta1
- Beta2
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Term
| Drugs that mimic sympathetic action are called: |
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Definition
- sympathomimetics
- Adrenergics
- Can be direct agonist or indirect agonist
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Term
| Drugs that block sympathetic action are called: |
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Definition
- sympatholytics
- adrenergic blockers
- Indrect action:
- triggers release of cathecholamines, which then activate alpha and beta receptors
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Term
| Parasympathetic Nervous System |
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Definition
"Rest and Digest"
"housekeeping chores" (like digestestion, excretion of waste)
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Term
| Parasympathetic Stimulation: effects |
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Definition
- Decreased HR
- Increased GI secretions
- Stimulus to empty bladder and bowel
- Constrict pupils
- Focus lens for near vision
- Bronchoconstriction
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Term
| Functional name for the Parasympathetic Nervous System |
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Definition
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Term
| Parasympathetic NS: Primary NT |
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Definition
| Acetylcholine (ACh) in synapse |
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Term
| Parasympathetic NS: Receptor sites |
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Definition
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Term
| Drugs that mimic parasympathetic (PS) action are called |
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Definition
parasympathomimetics or
cholinergic
- Agonist: direct action on the receptor
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Term
| Drugs that block PS action are called: |
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Definition
Parasympatholytics or
anticholinergics
- Antagonist: direct blocking at receptor site
- Indrect action:
- Prolongs effect of ACh by inhibiting the action of AChE
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