What happens when the pressure within the pulmonary cavity is more than the atmospheric pressure ?

Explanation

### Step-by-Step Solution:

1. **Understanding Pressure Differences**:
- The movement of air is governed by pressure differences. Air flows from areas of high pressure to areas of low pressure.

2. **Pulmonary Cavity Pressure**:
- The pulmonary cavity refers to the space within the lungs. When the pressure inside the pulmonary cavity (intrapulmonary pressure) is greater than the atmospheric pressure, it indicates that the lungs are in a state of forced expiration.

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