Question

How blood gets purified in lungs. explain​

Answer 1

Answer:

When breath is inhaled, oxygen from the air comes in contact with the impure blood and the blood takes up oxygen. The waste matter in the blood releases carbonic acid and the blood is purified. The purified blood is carried to the heart by the veins. In asthma, the bronchial tubes become spasmodic and they contract.

Explanation:

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Answer 2

Answer:

When breath is inhaled, oxygen from the air comes in contact with the impure blood and the blood takes up oxygen. The waste matter in the blood releases carbonic acid and the blood is purified. The purified blood is carried to the heart by the veins. In asthma, the bronchial tubes become spasmodic and they contract.

Explanation:

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