Question

explain the mechanism of breathing​

Answer 1

Explanation:

When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward. ... When the lungs exhale, the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases.

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Answer 2

Answer:

Air is taken into the body through nostrils where it is filtered by hair and mucus. Air then passes down through the trachea. When we breathe in, ribs move up and flatten the diaphragm, due to which the chest cavity becomes larger. Expansion of the chest cavity creates a partial vacuum in the chest cavity.