Question

What is the physiology of breathing?

Answer 1

Breathing:

1. The term physiology refers to the mechanisms of living things.
2. The process of exchange of O₂ from the atmosphere with CO₂ produced by the cells is called breathing.
3. It is commonly known as respiration.

The physiology of breathing involves two stages.

1. Inspiration: This occurs if the intra-pulmonary pressure is less than the atmospheric pressure. This is negative pressure.
2. Expiration: This occurs if the intra-pulmonary pressure is more than the atmospheric pressure.