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37 Cards in this Set
- Front
- Back
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part of the efferent division of the PNS (incl. some visceral afferent neurons) that maintains homeostasis
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autonomic nervous system (ANS)
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controls mobilization of energy stores in times of need
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sympathetic nervous system
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thoracolumbar (T1 - L2)division of nervous system
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sympathetic nervous system
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neurotransmitter secreted by most sympathetic fibers
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norepinephrine
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neurotransmitter secreted by most parasympathetic fibers
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acetylcholine
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organs innervated by ANS
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eye (III, VII)
salivary glands (VII, IX, X) heart lungs stomach pancreas liver/gall bladder adrenals (sympathetic only) bladder genitals |
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cholinergic fibers release ___
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acetylcholine
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adrenergic fibers release ___
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norepinephrine
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catecholamines
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epinephrine
norepinephrine dopamine |
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types of adrenergic receptors
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α1
α2 β1 β2 β3 - stim lypolysis |
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most α receptors are this type
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α1
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incr. HR/contractility, release renin
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β1
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adrenergic receptors stimulated by norepinephrine
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α (esp. α1 - vasoconstriction)
β1 |
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adrenergic receptors stimulated by epinephrine
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all (esp. β - vasodilation)
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effect of β1
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incr. HR/contractility
dilate coronary arterioles stim. renin release |
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effect of β2
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stim. insulin secretion
vasodilation bronchodilation relax GU, GI walls |
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effect of α1
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vasoconstriction
constrict sphincters dilate pupils (all but heart) |
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effect of α2
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clotting
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mydriasis
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sympathetic
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miosis
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parasympathetic
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lacrimal gland stim
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parasympathetic
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salivary gland stim
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parasympathetic
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sweat gland stim
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sympathetic
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incr. HR/contractility
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sympathetic
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decr. HR/contractility
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parasympathetic
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skin/GI vasoconstriction
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sympathetic
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dilatess bronchial tubes
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sympathetic
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constricts bronchial tubes
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parasympathetic
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bronchial gland stim.
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parasympathetic
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inhibits GI motility/secretion
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sympathetic
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stim GI motility/secretion
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parasympathetic
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contracts GI sphincters
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sympathetic
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relaxes GI sphincters
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parasympathetic
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adrenal gland stim.
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sympathetic
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contracts bladder
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parasympathetic
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ejaculation
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sympathetic
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genital erection
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parasympathetic
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