Question

inspiration and expiration (air pressure)​

Answer 1

Answer:

It is the process of air flowing into the lungs during inspiration (inhalation) and out of the lungs during expiration (exhalation). Air flows because of pressure differences between the atmosphere and the gases inside the lungs. ... Atmospheric pressure. Intraalveolar (intrapulmonary) pressure.

Answer 2

Inspiration occurs when intrapulmonary pressure falls below atmospheric pressure, and air moves into the lungs. ... Expiration occurs when intrapulmonary pressure is increased above atmospheric pressure. After the diaphragm contracts, it relaxes, thus decreasing thoracic volume and increasing intrapulmonary pressure.