What can cause disruption in the mechanics of breathing?

The disruption in the mechanics of breathing primarily relates to the need for pressure changes within the thoracic cavity to facilitate airflow in and out of the lungs. When the body inhales, the diaphragm and intercostal muscles contract, which lowers the pressure in the thoracic cavity, allowing air to enter the lungs. Conversely, during exhalation, these muscles relax, increasing pressure and pushing air out.

When there is an inability to create these essential pressure changes, whether due to muscle weakness, respiratory disorders, or structural abnormalities in the thoracic cavity, the mechanics of breathing are compromised. This inability can lead to insufficient ventilation, causing issues such as hypoxia or respiratory distress.

Understanding this mechanism highlights the significance of effective pressure changes as the foundation for normal respiratory function, making it clear why the ability to create those changes is crucial to the process of breathing.