Question

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What are functions of human lungs ??Explain with diagram.

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Answer 1

Answer:

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The lungs exchange oxygen and carbon dioxide between the air we breathe and the blood. The tracheobronchial tree is the passage way from the mouth to the interior of the lung. Gas exchange occurs in the alveoli deep in the lungs. Breathing air in (inhalation) requires muscular effort.

Answer 2

Explanation:

The lungs are like bellows. As they expand, air is sucked in for oxygen. As they compress, the exchanged carbon dioxide waste is pushed back out during exhalation. When air enters the nose or mouth, it travels down the trachea, also called the windpipe