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13 Cards in this Set
- Front
- Back
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Where are pre-sympathetic cell bodies located
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intermediolateral cell column of T1-L2
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What is the pathway of sympathetic axons
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exit via anterior roots
go to spinal nerve then to white rami communicans to paravertebral ganglia |
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Once pre-synaptic sympathetic axons reach paravertebral ganglia, what 4 things might it do?
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1.synapse and exit
2. ascend, synapse, and exit 3. descend, synapse, and exit 4. exit without synapsing |
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Post-synaptic sympathetic axons exit how when reaching somatic targets?
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gray ramus where the travel in the anterior or posterior rami
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Post-synaptic sympathetic axons exit how when reaching thoracic viscera?
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via splanchnic cardiopulmonary n. where it joins the cardiopulmonary plexus
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Where are presynaptic parasympathetic axons located?
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dorsal vagal motor nuclei
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What is the pathway of parasympathetic fibers reaching the heart?
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1.descend via vagus nerves
2.join the cardiopulmonary plexus 3.synapse with post-synaptic axons in wall of heart and bronchi 4. SHORT post-synaptic axons extend to myocardium, smooth m., or glands |
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Where are parasympathetic nicotinic receptors located and what NT do they bind?
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Ach, and they are located in ganglia
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Where are parasympathetic muscarinic receptors located and what NT do they bind?
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Ach, located on effector organ
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Where are the sympathetic nicotinic receptors located and what NT do they bind?
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Ach, located in ganglion
NE, located in adrenal medulla |
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Visceral non-painful stimuli travel backwards via?
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parasympathetic nerves to CNS
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Pathway for visceral pain stimuli
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cardiopulmonary plexus
cardiopulmonary splanchnic n. paravertebral ganglia white ramus spinal n. posterior root posterior horn of SC |
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What is the basis for referred pain?
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some collateral axons from visceral afferent axons synapse on nearby 2nd order somatic afferent cells, which causes confusion in the brain
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