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25 Cards in this Set
- Front
- Back
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inflammation is?
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vascular and cellular responses whose purpose is to localize or eliminate the injurious agents
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acute inflammation is?
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transcient process that occurs w/in few minutes of injury and lasts for short time, usually described by suffix -itis-
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5 causes of inflammation are?
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infectous agents
hypersensitivity reaction physical agents chemical agents tissue necrosis |
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infectous agents include?
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bacteria, viruses, parasites, protozoa
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hypersensitive reaction is?
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as due to tubercle bacilli or parasites
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physical agents include?
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trauma, heat, cold, radiation
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chemical agents include?
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acids, alkalis, bacterial toxins
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tissue necrosis includes?
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acute inflammatory response in adjacent viable tissue
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What are the cardinal signs of acute inflammation?
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rubor
dolor calor tumor functio laesa |
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rubor is?
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redness... due to blood vessel dilation
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dolor is?
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pain; due to increased pressure by exudate and by the following mediators; bradykinan, serotonin, and prostaglandin
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calor is?
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increased heat; due to increased blood flow
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tumor is?
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swelling; due to accumulation of exudate
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functio laesa is?
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loss of function; due to pain and tissue damage
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exudation is?
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fluid, protein, and blood cells escape from vascular system---> interstitial tissue
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transudate is?
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ultrafiltrate of blood and plasma, result from imbalance across the vascular endothelium
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edema is?
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excess of fluid in the interstitial tissue or body cavities; can be exudate or transudate
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Pus is?
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purulent inflammatory exudate abundant in leukocytes and cell debris
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properties of transudate include?
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normal permeability increase hydrostatic pressure
-no protein or low protein -only albumin(ultrafiltrate) -cells: none |
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properties of exudate is?
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increased permeability
-high protein content -all proteins including fibrinogen cells: inflammatory |
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MAJOR PHASES IN ACUTE INFLAMMATION
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MAJOR PHASES IN ACUTE INFLAMMATION
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after a strike to the skin what occurs?
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momentary WHITE LINE 9 due to arteriolar vasoconstriction
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the steps that follow the white line are called?
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triple response
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what is the triple response?
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the flush- red line due to capillary dilation
2. the flare- red irregular area, arteriolar dilation 3. the wheal- swelling, edema caused by increase permeability |
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Vascular changes= hemodynamics
what are the changes in blood flow? |
1. transient vasoconstriction of arterioles
2. vasodilation of arterioles & relaxation of pre capillary sphincters, leads to increased blood flow and opening of new capillary bed (hyperenemia) 3. slowing of circulation; increase vascular permeability, outpouring of fluid into interstitial tissue leads to increased blood viscosity |
