Question

Explain the mechanism of breathing in human beings.​

Answer 1

Answer:

• Breathing is the physical process of inhaling oxygen and exhaling carbon dioxide.
• The mechanism of breathing involves two main processes: inspiration and expiration.
• Inspiration occurs when the diaphragm and the external intercostal muscles contract.
• Expiration occurs when the diaphragm and the intercostal muscles relax.
• The contraction or relaxation of muscles around the lungs changes the entire volume of air inside the lungs, and so does the pressure.
• If the pressure inside the lungs is more than the outside, the air rushes out. If the opposite happens, the air rushes in.

• Due to the high elasticity of the lung tissue and low surface tension of moisture in the lungs, the lungs have higher compliance.

Explanation:

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