What Results When the Surfactant in the Lungs is Affected

Question

What results when the surfactant in the lungs is affected by smoking?
A) increased respiratory surface area
B) decreased gas exchange in the alveoli
C) reduced ability of hemoglobin to carry oxygen
D) increased concentrations of carbon monoxide

Accepted Answer

Smoking can damage the surfactant in the lungs, which leads to a decrease in its effectiveness. This can result in decreased gas exchange in the alveoli, as the fluid tension in the alveoli increases and makes it harder for oxygen and carbon dioxide to diffuse across the alveolar membrane.