Question

3. Explain the mechanism of breathing in humans.​

Answer 1

Explanation:

During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface, entering the bloodstream. During exhalation, the lungs expel air and lung volume decreases. The various types of breathing, specifically in humans, include: ... As the diaphragm relaxes, air passively leaves the lungs.

Answer 2

Explanation:

The mechanism of breathing involves two main processes;

Inspiration and Expiration.

Inspiration occurs when the daiphragm and the external intercostal muscles contrast.

.........The contraction or relaxation of muscles around the lungs changes the entire volume of air inside the lungs, and so does the pressure.

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