Blood flow in capillaries is:

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As blood flows from the aorta into the various arteries,arterioles,and capillaries,blood pressure falls.Also,the difference between systolic and diastolic pressure gradually diminishes.The fall of blood pressure and blood velocity in the capillaries may be related to the very high total cross-sectional area of the capillaries.It has been calculated that if all the blood vessels in a human were connected end-to-end,the total distance would reach around the Earth at the equator two times.A large portion of this distance would be due to the quantity of capillaries.

Blood Flow in Capillaries Is