The human circulation system has approximately 1 ✕ 109 capillary vessels. Each vessel has a diameter...
The human circulation system has approximately 1 ✕ 109 capillary vessels. Each vessel has a diameter of about 9 µm. Assuming cardiac output is 6 L/min, determine the average velocity (in cm/s) of blood flow through each capillary vessel.
Homework Answers
Area, A = (pi/4) d^2
A = (pi/4) x (9 x 10^-6)^2 = 6.36 x 10^-11 m^2
Total area, A' = 10^9 x 6.36 x 10^-11 = 0.064 m^2
Velocity, v = (6 x 10^-3)/(0.064 x 60) = 0.156 cm/s
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