The curve in question mark is caused by?
Bronchial asthma
Emphysema
Pulmonary fibrosis
Chronic bronchitis
Ans. (c) Pulmonary fibrosis(Ref: Ganong, 25th ed/p.631)This is the pulmonary compliance curveIt is decreased (lower curve) in pulmonary fibrosisNormal curve is the middle curveIt is increased in emphysema (upper curve)
Respiratory System