Final answer:
Increased lung volume would NOT decrease the total respiratory compliance. Conditions such as pulmonary fibrosis, emphysema, and surfactant deficiency can decrease the compliance of the lung.
Step-by-step explanation:
The condition that would NOT decrease the total respiratory compliance is D) Increased lung volume. Increased lung volume actually increases the compliance of the lung.
In conditions such as pulmonary fibrosis and emphysema, the compliance of the lung is decreased. Pulmonary fibrosis makes the lung tissue less pliable and more fibrotic, leading to a decrease in compliance. Emphysema, on the other hand, causes the loss of elastic tissue in the lungs, resulting in decreased compliance.
Surfactant deficiency can also decrease the compliance of the lung. Surfactant helps to reduce surface tension in the alveoli, allowing them to expand more easily during inhalation. Without sufficient surfactant, the alveoli become more rigid and compliance is reduced.