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20 Cards in this Set
- Front
- Back
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true or false, in the modified sympathetic nervous system, adrenaline is released to the postganglionic neuron to target cell?
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no, preganglionic
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true or false, in the modified sympathetic nervous system, adrenaline is released from teh adrenal medulla when its activated by postganglionic parasympathetic innervation?
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false, preganglionic
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true or false, in the modified sympathetic nervous system, adrenaline is released from teh adrenal medualla into the bloodstream?
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true
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true or false, in the modified sympathetic nervous system, results of adrenaline on target tissues are almost identiacal to that of the parasympathetic nervous system?
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false, the sympathetic nervous system
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what is the purpose of alpha blockers?
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to promote actions of NA or inhibit muscarinic, these cause sympathetic effects
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what is the purpose of beta blockers?
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mimics the parasympathetic, slows down the heart. Promote muscarinic actions of ACh or inhibit actions of NA
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true or false, all adrenoreceptors are G-protein coupled?
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true
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what is characterisitic of g-protein coupling.
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slow, long-lasting response. Local effect
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what is the length of the axons in the preganglionic sympathetic division?
what do they release, what does it bind to? |
short
ACh nAChR |
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what is the length of the axons of in the postganglionic sympathetic division?
what do they release, what does it bind to? |
long
NA AR (adernergic receptors) |
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what is the length of the axons in the preganglionic parasympathetic division?
what does it realease, what does it bind to? |
long
ACh nAChR |
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what is the length of postganglionic parasympathetic division?
what does it release, what does it bind to? |
short
ACh mAChR (muscarinic acetyl choline receptor) |
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do second order neurons (postganglionic)have myelination?
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no
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where is the soma for second order neurons?
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in the PNS
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exception: for the second order neurons sympathetic innervation of sweat glands, what is released, and what does it bind to?
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ACh
mAChR |
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true or false, binding of ACh to nAChR causes slow EPSP's that trigger AP in the postganglionic cell?
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false, they are fast
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true or false, the binding of ACh to mAChR (G-protein coupled) causes slow EPSP's or IPSP's?
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true
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parasympathetic is local or diffuse?
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local
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sympathetic is local or diffuse?
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diffuse b/c it enters the bloodstream
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True or false, the purpose of neuromodulators is to trigger an AP?
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false, they are used to modulate the postganglionic response to ACh
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