Question

What happiness during the process of exhalation​

Answer 1

Answer:

During the process of exhalation, the intercoastal muscles relax.

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Answer 2

Answer:

Diaphragm muscles relaxes and hence it moves into it's original shape which is a curve bending in. This reduces the volume of thoracic cavity.Even the inter coastal muscles relaxes thus decreasing the volume.So, the pressure inside the lungs increses which urges the air inside the lungs come out into the atmosphere where the pressure is low( movement of air from high pressure to low pressure).