Biology Practice Problems Gas Exchange Practice Problems Solution: Why is it important that the blood flow is the slo...

Solution: Why is it important that the blood flow is the slowest of all vessels in the capillaries?

Problem

Why is it important that the blood flow is the slowest of all vessels in the capillaries?

Solution

The velocity of blood flow depeneds on the total cross-sectional area of the vessels. As the total cross-sectional area of the vessels increases, the velocity of flow decreases. 

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