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Related Flashcards
Cards In This Set
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Homeostatis
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Balance between fluids inside and outside vessels
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Stasis
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Stoppage of the normal flow of a body substance, as of blood through an artery or of intestinal contents through the bowels.
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Interstitial fluid
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Comprises 1/3 of extracellular fluid
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Blood plasma
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Comprises 5% of water in body; aka serum in blood vessels
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Hydrostatic pressure
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Influenced by fluid dynamics (like plumbing); PUSHES fluid out of arteries, normally
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Osmotic pressure
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Influenced by size of molecules; water flows toward large molecules (eg proteins & fats); PULLS fluid back into veins normally
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Blood flow problems
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-excess blood tissues
-edema
-hemorrhage
-shock
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Excess blood in tissues
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Congestion - decreased blood flow (eg CHF) (passive)
hyperemia - increased blood inflow (active)
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Edema
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Excess extracellular fluid; major fluid in inflammation
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Hemmorhage
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Rupture of vessel; hematoma, exsanguination, dissecting aortic aneurysm
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Hematoma
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Concentration of blood outside vessels; "blood blister"
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Exsanguination
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Death from blood loss
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Dissecting aortic aneurysm
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Occurs in tertiary syphilis
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Shock
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Generalized lack of perfusion
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How do varicose veins form?
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Veins in legs dilate from hydrostatic pressure; valves no longer keep blood flowing toward heart; stasis & tortuous vessels
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