Architecture of the Circulation, Dr. D. Penney


Self Assessment:

1) How would a dye-dilution curve change in a patient with a femoral arteriovenous fistula? There would be
a. a reduced appearance time
b. a reduced recirculation (or ................. ) time
c. an increased appearance time

2) The arterioles are the site of a large pressure drop, therefore, their vascular resistance is (high/low).

3) Windkessel vessels serve to (increase/decrease) continuous arterial and capillary blood flow, but are present only in the systemic circulation ( T / F ).

4) The veins contain approximately (25%, 45%, 65%) of blood volume, while the capillaries hold (1%, 5%, 20%) at any given time.

5) The major portion of extracellular fluid is found in the circulatory system ( T / F ).

6) The glomerular and tubular capillary beds are an example of two resistances in (series/parallel).

7) Mean aortic pressure is about 100 mmHg, while mean pulmonary artery pressure is about 16 -18 mmHg, suggesting that pulmonary vascular resistance is approximately (the same as/1/5 - times) that of systemic resistance.



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