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[obsolete] WCM CICM EXAM
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[obsolete] WCM CICM EXAM
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[obsolete] WCM CICM EXAM3 possible fates of preganglionic sympathetic fibers - ANS-1) synapse with post
ganglionic neuron, exit via gray ramus back to spinal nerve
2) ascend/descend to synapse at other level sympathetic chain ganglion
3) pass through to sympathetic nerves to synapse at peripheral ganglion
All true postganglionic sympathetic neurons originate at either... - ANS-sympathetic
chain ganglion or peripheral sympathetic ganglion
At what receptors are epi/norepi more potent? - ANS-epi: beta
norepi: alpha
(BEAN)
describe the pre/post ganglionic fibers of the PNS - ANS-long, myelinated preganglionic
fibers; short postganglionic fibers (ganglion is near or within target tissue)
Difference between pre and postganglionic axons? - ANS-pre are myelinated, post are
unmyelinated
epinephrine travels through the bloodstream to act on... - ANS-N-ACh-R receptors
How does the SNS travel from the spinal cord to its preganglionic synapse? - ANS--
originates at lateral horn of spinal cord
- fibers exit through ventral root
- continues to spinal nerve
- passes through white ramus into the sympathetic chain (ganglion)
How is an ANS signal "shut off"? - ANS-ACh is destroyed by acetylcholinester-ase,
terminating its effect; choline is transported to terminal ends for new ACh synthesis
How to increase ACh levels in the synapse? - ANS-inhibit ACh-esterase (prevents
destruction, leading to prolonged effect)
is SNS catabolic or anabolic - ANS-catabolic
is the PNS catabolic or anabolic - ANS-anabolic (resting = building)
Nerves releasing ACh are referred to as... - ANS-cholinergic
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