The Circulatory System — Biology STD 10 — Question
ICSE BoardEnglish MediumSTD 10BiologyThe Circulatory System1 Mark
Question
Why are capillaries thin walled?
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Answer
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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