A)Intra-airway pressures increase and elastic recoil pressure increases at lower lung volumes.
B)Intra-airway pressures decrease and elastic recoil pressure increases at lower lung volumes.
C)Intra-airway pressures increase and elastic recoil pressure decreases at lower lung volumes.
D)Intra-airway pressures decrease and elastic recoil pressure decreases at lower lung volumes.
E)There is no change in intra-airway pressures or elastic recoil pressures at lower lung volumes.

A)Cystic fibrosis
B)Pulmonary fibrosis
C)Duchenne's muscular dystrophy
D)Scoliosis
E)Paralysis of the diaphragm

A)Movement of the equal pressure point at low lung volumes into the intrathoracic airways.
B)Movement of the equal pressure point at low lung volumes toward the alveolus.
C)Movement of the equal pressure point at low lung volumes toward the mouth.
D)No effect on the location of the equal pressure at low lung volumes.
E)Movement of the equal pressure point from airways with cartilage to airways without cartilage.