Q.

Regarding the physical characteristics of the circulation:

A. arterioles have a strong muscular wall but can close completely
B. the arterial system contains the greatest volume of blood at any given time
C. the aorta has a greater total cross sectional area than the venae cavae
D. velocity is directly proportional to the cross sectional area of the blood vessel
E. Reynold’s number represents a measure of laminar blood flow
Answer» A. arterioles have a strong muscular wall but can close completely
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