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22 Cards in this Set
- Front
- Back
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adrenergic
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nerve ending that releases NE as primary transmitter, also a synapse in which NE is primary transmitter
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adrenoceptor
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receptor that binds and is activated by one of the catecholamine transmitters (NE, Epi, Dopamine)
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autonomic effector cells or tissues
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cells or tissues that have adrenoceptors or cholinoceptors, which when activated, alter the function of those cells or tissues
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baroreceptor reflex
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the neuronal homeostatic mechanism, that the body uses to maintain BP constant, sensory limb originates in baroreceptors of carotid sinus
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cholinergic
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nerve ending that releases Ach as primary transmitter, synapse in which Ach is primary transmitter
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cholinoceptor
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receptor that binds and is activated by Ach
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dopaminergic
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nerve ending that releases dopamine as primary transmitter, synapse in which dopamine is primary transmitter
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homeostatic reflex
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neuronal compensatory mechanism for maintaining a body function at a predetermined level
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parasympathetic
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part of ANS that originates in cranial nerves and sacral part of SC
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choline ester
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cholinomimetic drug consisting of choline (alcohol) esterified with an acidic substance
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cholinergic crisis
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clinical condition of excessive activation of cholinoceptors (bradycardia)
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cholinomimetic alkaloid
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drug with weakly basic properties (plant origin) whose effects resemble those of Ach (digoxin)
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cyclospasm
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marked contraction of ciliary muscle, maximum accommodation (adjusting lens)
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direct-acting cholinomimetic drug
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one that binds and activates cholinoceptors; effects mimic Ach
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endothelium-derived relaxing factor (EDRF)
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potent vasodilator substance, largely NO, that is released from vascular endothelium cells
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indirect-acting cholinomimetic drug
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one that amplifies the effects of endogenous Ach by inhibiting Achase
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muscarinic agonist
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cholinomimetic drug with primarily muscarinic-like actions
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myasthenic crisis
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in pts. with myasthenia, an acute condition (skeletal muscle weakness) caused by inadequate cholinomimetic treatment (not getting enough Ach)
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nicotinic agonist
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cholinomimetic drug with primary nicotine-like actions
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organophosphate
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an ester of phosphoric acid and an organic alcohol that inhibits cholinesterase (so increase in Ach)
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organophosphate aging
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process whereby the organophosphate, after binding to cholinesterase, is chemically modified and becomes more firmly bound to enzyme
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parasympathomimetic drug
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one whose effects resemble those of stimulating that parasympathetic nerves
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