Question

Write the steps involved in exhalation.​

Answer 1

Answer:

1. The intercostal muscles relax.
2. This causes the ribcage to move down and in.
3. Diaphragm muscles relax and shape the diaphragm as a dome.
4. This causes a decrease in the volume of the ribcage and and an increase in the air air pressure.
5. Air is released from the lungs , into the external atmosphere.