Term
| Causes of Active Hyperemia |
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Definition
| occurs when arterial and arteriolar dilation produces an increased flow of blood into capillary beds. Encountered whenever excess body heat must be dissipated, such as in muscular exercise; hyperemia of skeletal muscle during fight or flight response; blushing. |
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Term
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Definition
| passive process that results from impaired venous drainage, causes cyanosis due to accumulation of deoxygenated hemoglobin in the affected area |
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Term
| Active Hyperemia/ Congestion |
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Definition
| an increase in blood volume within a tissue |
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Term
| actively hyperemic organs |
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Definition
| tissues are redder than normal because of the engorgement with oxygenated blood |
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Term
| actively congested organs |
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Definition
| abnormal blue-red color that stems from the accumulation of deoxygenated hemoglobin in the affected area |
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Term
| Chronic passive congestion of the lung |
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Definition
| due to decreased left ventricular output from the heart, which causes blood back up in the alveolar spaces and distension of blood. This leads to minute hemorrhages into the alveolar spaces. Alveolar spaces also contain hemosiderin laden macrophages derived from phaocytosed red cells. |
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Term
| Chronic passive congestion of the liver |
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Definition
| central regions of the hepatic lobules are red/brown and slightly depressed, they are accentuated against the surrounding zones of uncongested tan, fatty, liver. |
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Term
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Definition
| macrophage laden with hemosiderin, derived from phagocytosed red cells, common in chronic pulmonary congestion and chronic passive congestion of the liver |
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Term
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Definition
| owing to cell loss in chronic passive congestion of the liver |
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Term
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Definition
| Brown induration accentuated against the surrounding zones of uncongested tan, fatty, liver in chronic passive congestion of the liver |
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Term
| Special Stains used to differentiate Hemosiderin Laden Macrophages |
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Definition
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Term
| Increased flow of blood into the capillary bed of an organ as the result of arterial dilation is called: |
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Definition
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Term
| With right ventricular failure, at which site would pooling of blood NOT occur? |
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Definition
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