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Stack #107642
| Question | Answer |
|---|---|
| 3 basic neuroeffector tissues innervated by GVE neurons | smooth m, cardiac m, glands |
| divisions of ANS | sympathetic and parasympathetic |
| ganglion | aggregation or group of cell bodies outside CNS |
| where are preganglionic neuron cel bodies on ANS | preganglionic neuron cell bodies found in CNS |
| where are efferent neuron cell bodies of somatic divi of PNS | anterior horn of spinal cord |
| where are postganglionic neuron cell bodies of ANS | in autonomic ganglia; will exit ganglia to synapse with one of neuroeffector tissues |
| primary fxn of ANS | maintains homeostasis, cntrls fxn of visceral organs an dskin; autonomic tone and vasomotor tone symapthetic NS |
| paravertebral ganglion | lateral to vertebral column |
| prevertbral ganglion | anterior to vertebral column |
| parasympathetic NS | forms terminal ganglion-located close to or in wall of organ innervated |
| splanchnic nn | neurons that pass thru sympathetic trunk of ganglia with synapsing |
| sympathetic preganglionic neuron cell bodies are found | in lateral horn of spinal cord and exit the bertebrae from T1-L2 |
| symp GVE neurons emerge from where | spinal cord in anterior roots of spinal nerves from spinal segs T1 to L2 |
| symp preganglionic neuron fibers exit spinal nerve | via white rami to enter symp chain ganglia |
| once sympathetic GVE neuron exits spinal n & enters paravertebral ganglia, 4 things | pass directly into symp chain gang & synapse w/ a postgang neuron; pass directly into symp chain gang & ascend or descend chain; pass thru symp chain gang into thoracic portion of symp trunk w/out synapsing; pass thru to adrenal medulla w/out synapsing |
| symp neurons which exit parabertebral gang to rejoin spinal do so via what structure | grey ramus |
| spinal nerves have white rami communications assoc w/ them | spinal n T1-L2 |
| spinal n have grey rami communications | spinal n C1-coccyx |
| neurotransmitter released from pregang sympathetic neurons | acetylcholine (chonline and acetyl coA) |
| what enzyme inactivates neurotransmitter released from pregang symp neurons | acetylcholinesterase |
| neurotransmitter released from the majority of postgang symp neurons | catecholamines-norepinephrine |
Created by:
nnira
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