The given graph likely depicts
Emphysema
Interstitial lung disease
Normal study
Kyphosis
The curve is shifted downward and to the right (compliance is decreased) by pulmonary edema and interstitial pulmonary fibrosis. Pulmonary fibrosis is a progressive restrictive airway disease in which there are stiffening and scarring of the lung. The curve is shifted upward and to the left (compliance is increased) in emphysema. Reference: Ganong's Review of Medical Physiology; 25th edition; Page no: 630
General physiology