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12 Cards in this Set
- Front
- Back
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Preganglionic Sympathetic neurons:
-in the spinal cord ___ -What segments? |
-lateral horn
-from T1-L2 or 3 |
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Postganglionic Sympathetic neurons:
-neurotransmitter -exception |
-adrenergic (epinephrine or norepinephrine)
-sweat glands --> cholinergic (acetylcholine) |
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Intermediolateral (IML) Columns
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spinal cord columns at lateral horn
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How many and which spinal nerves have sympathetics associated with it?
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ALL 31 spinal nerves
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Sympathetic:
The preganglionic neurons that have their axons in the splanchnic nerves are found within the intermediolateral cell column of the spinal cord at the following levels: |
Greater T5-T9
Lesser T10-T11 Least (T11)-T12 |
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The ___ is the sympathetic ganglion of the head.
___ axons leave the ganglion and travel along blood vessels to reach their targets in the head. Injury to any of the neurons or axons in this pathway can result in a ___. Symptoms? |
-superior cervical ganglion
-Postganglionic -Horner’s syndrome. 1. Ptosis (drooping eyelid) 2. Miosis (small pupil) |
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Neurotransmitter of pre- and postganglionic nerurons of the parasympathetic NS
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acetylcholine (cholinergic)
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Hirschsprung’s Disease:
Also known as ___ There is a failure of ___ to migrate into the ___ colon 1:5000 births Males affected more than females 4:1 |
-congenital aganglionic megacolon
-neural crest cells -distal |
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Achalasia:
Formerly called ___ Onset 25-60 years Men=women Loss of ___ in the ___ -___ paralyzed in constricted state Esophagus dilated |
-cardiospasm
-myenteric neurons (Auerbach’s plexus) -lower esophagus -Lower esophageal sphincter (LES) |
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Viceral pain afferents travel with the ___.
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sympathetics
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Viceral stretch afferents travel with the ___
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parasympathetics
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Referred Pain:
Pain associated with visceral disease and inflammation is referred to the abdominal wall. This is because visceral nociceptive (pain) afferents enter the spinal cord with ___. All pain fibers run with the ___ system and enter the spinal cord at the same segment that gives rise to the preganglionic efferents. |
-somatic afferents
-sympathetic |
