Question

explain the mechanism of Expiration

Answer 1

The diaphragm and external intercostal muscles relax and return to their resting positionThe elastic recoil of the stretched lungs causes them to recoil back to their original volume rather than due to an active movementDue to Boyle’s law, a reduced volume leads to an increased pressure within the lungsWhen the pressure within the lungs is greater than the outside, air rushes out of the lungs as gas molecules move from an area of high pressure to low pressure