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15 Cards in this Set
- Front
- Back
Adrenergic neurons with nicotinic receptors are found in _________fibers of the SNS.
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postganglionic
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How does the SNS cause increase in blood flow to the muscles?
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vasoconstriction increases arterial pressure which increases cardiac output
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Sympathetic preganglionic fibers enter the paravertebral ganglia through ______________
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white ramus communicans
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Name the cranial nerves of the PNS
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CN III, VII, IX, X
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Which organ is innervated at the Edinger-Westphal nucleus?
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eye
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Parasympathetic innervation of the heart occurs via which cranial nerve?
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CN X
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What type of receptor is associated with sweat glands?
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cholinergic (muscarinic)
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Gq protein is associated with what type of receptor?
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adrenergic (alpha-1)
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phospholipase C cleaves PIP2 forming ________ & ___________.
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DAG; IP3
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IP3 causes an increase in intracellular _____ levels which leads to muscle contraction
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Calcium
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What happens to cellular activity when adenylyl cyclase converts ATP into cyclic AMP (cAMP)
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cellular activity increases
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acetylcholinestrase removes ACh from the synaptic cleft by degrading it into ___________ and ______________
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acetate ion and choline
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What effect do antimuscarinic drugs have on the SNS? How does this affect heart rate?
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block sympathetic nervous system causing the heart rate to increase
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The drugs that block receptors on adrenergic effector organs are _____________
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antagonists (turn it off)
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Agonist drugs acting on adrenergic effector organs cause the release of ____________
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Norepinephrine (NE)
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