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Why do capillaries have small lumen?

Harshit Singh , 3 Years ago
Grade 12th pass
anser 1 Answers
Yash Patari

Last Activity: 3 Years ago

The lumen of the capillaries is very small in size so that the surface area to volume ratio increases. This facilitates better exchange of oxygen, nutrients and other toxins to and from the blood and tissues.
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