Blood Due this Friday, Nov 13 at 11:59 pm (EST) Blood flows in an aorta of radiu

Question

Blood Due this Friday, Nov 13 at 11:59 pm (EST) Blood flows in an aorta of radius 4.38mm at 30.0cm/s. Calculate the volume flow rate. 1.082 L/min You are correct. Your receipt no. is 150-9835 Help: Receipt Previous Tries Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. If all the blood from the aorta flows into the capillaries and the speed of flow through the capillaries is 0.85mm/s, calculate the total cross-sectional area of the capillaries.

Explanation / Answer

Ac= Area of capillaries

Vc = 85 x 10-3 m/s

Volume flow rate remains constant , V = 1.082 L/min = 1.67 x 10-5 m3/s

hence Volume flow rate in capillaries = Ac Vc

1.67 x 10-5 = Ac (85 x 10-3 )

Ac = 0.000196 m2

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