Cardiopulmonary Anatomy and Physiology (6th ed), Jardins.
College: Second year
1. Diaphragm contracts.
2. Thorax expands.
3. Trans-respiratory changes from 0 to +3.
4. Inspiration occurs.
5. Alveolar pressure continues to rise as the alveoli fill with air.
6. Once the alveolar pressure reaches 760 mmHg again, inspiration ends.
7. Thorax recoils.
8. Diaphragm relaxes.
9. Alveolar pressure continues to rise as the lungs and the thorax recoil on the alveoli.
10. This pressure gradient causes gas to flow out of the lungs.
11. Expiration begins.
Mechanisms of pulmonary ventilation