Science, asked by neelamsaini11, 5 months ago

what are capillaries ? how are they helpful in exchange of materials

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Answered by Anonymous

1

Answer:

The blood flows through the capillaries picking up and delivering materials as it passes each cell. ... Capillaries are exchange vessels. Gases (oxygen and carbon dioxide), nutrients, and wastes pass in both directions across capillary walls. Blood flow in capillaries is pushed by the pumping of the heart.

Explanation:

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