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What is the main importance of blood capillaries?

Answer and explanation

Correct answer: To allow exchange of materials

Capillaries are microscopic blood vessels that connect arterioles and venules. Their walls are only about one cell thick, so oxygen and nutrients can diffuse from blood into tissues, while carbon dioxide and other wastes move into the blood. This makes option A correct. Bones are formed by bone tissue, chewing is performed by the mouth and teeth, and filtering inhaled air is mainly associated with nasal structures.

Related tags

CapillariesBlood-VesselsMaterial-ExchangeTransport-SystemLife ProcessesWorld Of LivingScienceClass 10 Mcq

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