# Question

The speed of blood in a major artery of diameter 1.0 cm is 4.5 cm/s.

(a) What is the flow rate in the artery?

(b) If the capillary system has a total cross-sectional area of 2500 cm2, the average speed of blood through the capillaries is what percentage of that through the major artery?

(c) Why must blood flow at low speed through the capillaries?

(a) What is the flow rate in the artery?

(b) If the capillary system has a total cross-sectional area of 2500 cm2, the average speed of blood through the capillaries is what percentage of that through the major artery?

(c) Why must blood flow at low speed through the capillaries?

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