USCSOM: ANS Physiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What is the neurotransmitter associated with parasympathetics? | acetylcholine
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| What type of receptors are associated with parasympathetics? | muscarnic and nicotinic receptors
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| What neurotransmitter is associated with sympathetics? | norepinephrine
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| What receptors are associated with sympathetics? | alpha/beta adrenergic receptors
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| Preganglionic sympathetics release what neuro transmitter? | acetylcholine
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| Cholinergic neurotransmission is found in what type of fibers? | preganglionic para/symp, post para, pstsym sweat
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| What enzyme is involved in the formation of acetylcholine? | choline acetyltransferase
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| What is the primary enzyme that terminates ACH signal? | acetylcholine esterase
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| What are the two types of cholinergic receptors? | nicotinic, muscarinic
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| Ligand-gated ion channels are also known as ______ receptors | nicotinic
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| G-protein coupled receptors are also known as _____ receptors | muscarinic
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| What type of receptors hyperpolarize cardiac myocytes and open K channels? | M2 muscarinic
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| What type of muscarinic receptors increase Ca in neuronal cells? | M1
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| What type of muscarinic receptors increase exocrine gland secretion? | M3
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| What muscarinic receptor is associated with nitric osxide induced vasodilation?" | M3
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| What kind of fibers are most postganglionic neurons? | noradrenergic neurons
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| What neurotransmitter is associated with adrenergic neurons? | norepinephrine
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| What are the catecholamines? | NE, Epi, DA
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| What is the rate limiting step in synthesis of catecholamines? | tyrosine hydroxylase
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| What adernergic receptors down regulate NE release? | alpha-2 receptors
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| What is the major route of inactivation for adrenergic neurotransmission? | reuptake
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| what are the metabolic inactivating enzymes of adrenergic neurotransmission? | MAO (monoamine oxidase)
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| Norepinephrine are agonists to what kind of adrenergic receptors? | a-1, b-1, a-2
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| Epinephrine is an agonist to what kind of adrenergic receptors? | a-1, b-1, b-2, a-2
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| What are the major effects of a-1 activation? | vascular, radial mm eye, vas deferens, prostate
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| What are the major effects of b-1 activation? | All cardiac functions
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| What are the effects of b-2 activations? | relax smooth mm
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