In humans, the process of exhalation is brought about in large part by

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Quizplus · Accepted Answer

Exhalation occurs due to the elastic recoil of lung tissues, which causes them to decrease in volume and expel air from the lungs. The contraction of external intercostal muscles and the lowering of pressure in the thoracic cavity both play a role in inhalation, not exhalation. The diaphragm also plays a role in inhalation, but not to the extent that it alone brings about exhalation. Complete collapse of the lung tissue would be a medical emergency situation, not a normal process of respiration.

In Humans, the Process of Exhalation Is Brought About in Large