Question

Why capillaries are thin walled?
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Answer 1

The capillaries are thin walled, because they help in the exchange of gases and diffusion of materials into the cells. This diffusion is possible due to the thinness of its walls.

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Answer 2

Answer:

Capillaries need to be thin walled because their main job is gas exchange. Throughout most of the body, they bring oxygen to the tissues and remove.

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