Chapter 33: Circulation Through Special Regions

Chapter 33. Circulation Through Special Regions

Which of the following organs has the greatest blood flow per 100 g of tissue?

A. Brain

B. Heart muscle

C. Skin

D. Liver

E. Kidneys

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

A. constitutive activation of GLUT3 in neurons.

B. SGLT-1 deficiency in astrocytes.

C. GLUT5 deficiency in cerebral capillaries.

D. GLUT1 55K deficiency in cerebral capillaries.

E. GLUT1 45K deficiency in microglia.

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?

A. Medulla

B. Area postrema

C. Motor area

D. Parietal lobe

E. Thalamus

The pressure differential between the heart and the aorta is least in the

A. left ventricle during systole.

B. left ventricle during diastole.

C. right ventricle during systole.

D. right ventricle during diastole.

E. left atrium during systole.

Injection of tissue plasminogen activator (t-PA) would probably be most beneficial

A. after at least 1 year of uncomplicated recovery following occlusion of a coronary artery.

B. after at least 2 months of rest and recuperation following occlusion of a coronary artery.

C. during the second week after occlusion of a coronary artery.

D. during the second day after occlusion of a coronary artery.

E. during the second hour after occlusion of a coronary artery.

Which of the following does not...