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5 Cards in this Set
- Front
- Back
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What is a pscyho-visceral reflex?
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psychic stimuli (stress) may produce a reflex response in various organs whose innervation is received from the brain (cranial nerves).
alternatively, the psychic stim may work through neuroendocrine axis, effecting profound visceral changes via endocrine control. stress and anxiety provoke sympathetic NS stim - multiple visceral changes. Extremem cases - adrenal medulla releases volumes of epi and NE into blood - systemic segmental effects |
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What is somato-somatic reflex? viscero-visceral?
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ss - somatic stim produces a reflex response in somatic structure whose innervation is derived from same segment
vv - visceral stim produces a reflex response in visceral structures whose innervation is derived from same segment |
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What are the major sympathetic innervation areas?
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heart - T1-6
resp - T1-6 (2-7) upper gi - T5-9 -greater splanchnic nerve - celiac ganglion middle gi - T10-11 - lesser splanchnic nerve - superior mesenteric ganglion lower gi - T12-L2 - least splanchnic nerve - inferior mesenteric ganglion kidneys - T10-11 Test/Ovar - T10-11 Leg - T11-L2 |
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What is the role of para/symp on pupils and lens in the eye?
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symp - mydriasis (dilate), ciliary muscle relaxes
para - miosis (constrict), ciliary muscle contracts - convex for near vision |
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What happens to the bladder wall/bladder sphincter during para/symp stim?
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para:
wall (detrusor) - contraction sphincter (trigone) - relax symp: wall (detrusor) - relax sphincter (trigone) - contract |
