Biology, asked by Kartik0071, 1 year ago

what changes takes place during expiration and inspiration in the following cases a)ribs. b)diaphragm. c)intercoastal muscles

Answers

Answered by Shahmeer24
3
during inspiration, ribs comes more towards the chest. diaphragm comes down to allow air come into the lungs.

during expiration the ribs and diaphragm comes to their original places.

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Answered by Anonymous
0

Answer:

During expiration, the internal intercostal muscles contract, and the diaphragm relaxes. This is because the internal intercostal muscles contracting and the diaphragm relaxing decreases the volume of the thoracic cavity. This in turn decreases the volume of the lungs.

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