Question

Explain mechanism of breathing.

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Answer 1

Answer:

The mechanism of breathing involves two main processes: inspiration and expiration. Inspiration occurs when the diaphragm and the external intercostal muscles contract. ... The contraction or relaxation of muscles around the lungs changes the entire volume of air inside the lungs, and so does the pressure.

Answer 2

Answer:

breathing involve 2 process inspiration and expiration. In the process of inspiration air is taken inside the body and volume of the lungs increased due to which pressure inside lungs decreases hence air moves from high pressure to low pressure that is from atmosphere to nose for lungs in this way in the process of inspiration is taken inside the body similarly in the process of expiration air is taken outside the body or air is expelled from the body in the process of expiration volume of the lungs decreases and pressure inside the lungs become hai and air moves from high pressure to low pressure that is from lungs to atmosphere in this way air is expelled from the body