Air Rushes into the Lungs of Humans During Inhalation Because

Question

Air rushes into the lungs of humans during inhalation because
A) the rib muscles and diaphragm contract, increasing the lung volume.
B) the volume of the alveoli increases as smooth muscles contract.
C) gas flows from a region of lower pressure to a region of higher pressure.
D) pulmonary muscles contract and pull on the outer surface of the lungs.
E) a positive respiratory pressure is created when the diaphragm relaxes.

Accepted Answer

During inhalation, the rib muscles and diaphragm contract, increasing the lung volume. This increase in volume results in a decrease in pressure within the lungs, causing air to rush into the lungs from the atmosphere, where the pressure is higher.