Flashcards in Hemodynamics Part I: Hyperemia and Congestion Deck (10):
active process in which arteriolar dilation results in increased flow of blood to a tissue
examples of hyperemia
skeletal muscle during exercise
why is tissue red with hyperemia?
erythematous due to engorgement with oxygenated blood
passive process due to impaired outflow of blood from a tissue
what color is congestion?
blue-red coloration due to accumulation of deoxygenated hemoglobin (cyanosis)
True or false: you can have both congestion and edema
congestion and edema commonly occur together
differentiate between alveolar and chronic pulmonary congestion on microscopic level
acute: alveolar capillaries engorged with blood, alveolar septal edema, focal intraalveolar hemorrhage
chronic: thickened and fibrotic septa, heart failure cells
chronic hepatic congestion
central regions of hepatic lobules are grossly red/brow and depressed due to cellular loss surrounded by unaffected areas