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21 Cards in this Set
- Front
- Back
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Nervous system has 2 parts what are they?
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the CNS and the PNS
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Part of the peripheral system is what?
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the autonomic system which controls involuntary responses by influencing organs, glands, and smooth muscles.
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The ANS breaks down into two parts what are they?
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the sympathetic nervous system (SNS) and the parasympatetic system (PSNS)
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Sypathetic system is the ____.
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Fight or flight system.
Part of catecholiamines. Has affect on adrenergic receptors. |
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Name some catecholiamines
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adrenalin, dopamine,norepinephrine is the neurotransmitter
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what type of system is the PSNS?
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the rest and digest system.
or cholinergic. Acetylcholine is the neurotransmitter. (ACH) |
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Affect on adrenergic receptors
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Alpha- Receptors in BV
Beta 1- in the heart Beta 2- in the lungs |
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A C
B D |
Alpha Constricts
Beta Dialates |
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What do alpha drugs do?
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They constrict the blood vessels
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What do beta 1 drugs do?
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- ^ heart rate
- ^ contractility - ^ aoutonoticity |
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What do beta 2 drugs do?
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they cause bronchodilation
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What is a beta blocker?
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Blocks all the SNS (sypathetic) effects.
Causes rest & digest (PSNS) signs and symptoms. |
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Other words for beta blocker?
(all terms mean the same thing) |
Anti-Adrenergics
Adrenergic blocker or inhib. Antagonist Sympatholitic |
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What is an ischemia?
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Lack of O2 that causes pain.
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What is the therapeutic use for adrenergics?
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-cardiac failure or shock
-quick acting but short acting iv drugs |
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What is preload?
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amount of blood returning to the right atrium
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What is afterload?
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amount of resistance being met as the heart tries to pump out the blood.
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For M.I. patients we want to (Increase/Decrease) afterload?
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In M.I. patients we want to decrease afterload.
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WHat is chronotropic?
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Increase heart rate result of dromotropic effect or enhanced conduction through AV node and inceases reate of repolarizaiton.
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What is Inotropy
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Contractility of the heart
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What is automaticity increase?
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unique property of cardiac cells to stimulate electrical conduction.
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