During inhalation/inspiration,the diaphragm contracts and the alveolar pressure is less than atmospheric pressure;during exhalation/expiration,the diaphragm relaxes and the alveolar pressure is greater than atmospheric pressure.

Question

Quizplus · Accepted Answer

This statement is true. During inhalation, the diaphragm contracts and descends, causing the thoracic cavity to expand and the alveolar pressure to drop below atmospheric pressure, allowing air to flow into the lungs. During exhalation, the diaphragm relaxes and ascends, causing the thoracic cavity to shrink and the alveolar pressure to increase above atmospheric pressure, leading to air flowing out of the lungs.

During Inhalation/inspiration,the Diaphragm Contracts and the Alveolar Pressure Is Less