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Chapter 33. Circulation Through Special Regions
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Which of the following organs has the greatest blood flow per 100 g of tissue?
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A baby boy is brought to the hospital because of convulsions. In the course of a workup, his body temperature and plasma glucose are found to be normal, but his cerebrospinal fluid glucose is 12 mg/dL (normal, 65 mg/dL). A possible explanation of his condition is
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A. constitutive activation of GLUT3 in neurons.
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B. SGLT-1 deficiency in astrocytes.
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C. GLUT5 deficiency in cerebral capillaries.
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D. GLUT1 55K deficiency in cerebral capillaries.
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E. GLUT1 45K deficiency in microglia.
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A scientist injects a rat intravenously with Evans blue, a dye that binds to serum albumin, then euthanizes the animal one hour later. When she examines sections of the brain, where would blue staining be expected?
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The pressure differential between the heart and the aorta is least in the
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A. left ventricle during systole.
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B. left ventricle during diastole.
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C. right ventricle during systole.
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D. right ventricle during diastole.
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E. left atrium during systole.
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Injection of tissue plasminogen activator (t-PA) would probably be most beneficial
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A. after at least 1 year of uncomplicated recovery following occlusion of a coronary artery.
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B. after at least 2 months of rest and recuperation following occlusion of a coronary artery.
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C. during the second week after occlusion of a coronary artery.
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D. during the second day after occlusion of a coronary artery.
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E. during the second hour after occlusion of a coronary artery.
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Which of the following does not...