College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 23

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 cm 2 , 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