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Category:Acute Inflammation (view source)
Revision as of 12:33, 4 August 2010
, 12:33, 4 August 2010no edit summary
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+ +===Catarrhal===+
−* Catarrhal inflammation is a mild form of inflammation.
−* Occurs on mucous membranes where there are many mucus cells.
−* The consistency of catarrhal exudate varies from water to gelatinous.
−* Colour varies from cloudy to pinkish.
−* This form of exudation is essentially a shedding of epithelium containing many mucus cells, neutrophils, some RBCs, and flecks of fibrin.
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−* Common in mild forms of rhinitis, tracheitis, bronchitis, gastritis and enteritis.
−[[Category:Acute Inflammation]][[Category:To Do - Blood]]
−===Fibrinous===
−
−* Fibrinous exudation occurs in more severe endothelial injury.
−** Injury results in the escape of fibrinogen, which is converted to fibrin.
−* The fibrin formed appears as a yellowish coagulation on the surface of or within a tissue.
−** Common in the lungs and on serous surfaces.
−* In hollow organs the fluid may coagulate to form casts of the lumen.
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−* Fibrin will peel off from the underlying tissue without causing damage to it.
−[[Category:Acute Inflammation]][[Category:To Do - Blood]]
−===Diptheritic===
−
−* Diphtheritic exudate a more severe form of fibrinous exudate in which there is considerable necrosis of the underlying tissues.
−* Diptheritic exudate is firmly adherent to the underlying tissue.
−** Attempts at removal cause tearing of this tissue>
−* Commonly seen with internal surface fungal infections.
−** E.g. in the nose of the dog and the guttural pouch of the horse.
−** Fungal toxins penetrate the underlying tissue causing coagulation necrosis.
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−===Haemorrhagic===
−
−* This is a severe acute to peracute inflammation in which haemorrhage is the main component.
−
−* Seen in the lymph nodes, lungs and intestine in severe inflammation.
−[[Category:Acute Inflammation]][[Category:To Do - Blood]]
−===Purulent===
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−* In purulent inflammation, pus is the predominant feature.
−** Pus is an admixture of dead and dying neutrophils with necrotic cells and a pyogenic agent.
−*** Proteolytic enzymes released by the dying neutrophils lyse tissue cells to produce a fluid.
−* Colour varies depending upon the agent.
−** May be white, yellow, green or brown.
−* An abscess is a circumscribed sphere of pus surrounded by a pyogenic membrane.
−** The pyogenic membrane is composed of capillaries bringing neutrophils into the sphere.
−** This rapidly becomes enveloped by a fibrous tissue capsule.
−*** A local connective tissue response attempting to wall off the purulent irritant from nearby normal tissue.
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−[[Category:Acute Inflammation]][[Category:To Do - Blood]]
{{frontpage
+|pagetitle =Acute Inflammation
+|pagebody =
−==Fluids==
+|contenttitle = Content
−===[[Serous Inflammation]]===
+|contentbody =<big><b>
+<categorytree mode=pages>Acute Inflammation</categorytree>
+</b></big>
−|logo = path-logo.png
−}}
−[[Category:Inflammation]]
[[Category:Inflammation]]