Surfactant helps to prevent the alveoli from collapsing by ________.
A. humidifying the air before it enters
B. warming the air before it enters
C. interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid
D. protecting the surface of alveoli from dehydration and other environmental variations
Answer:C
Surfactant helps to prevent the alveoli from collapsing by ________.
A. humidifying the air before it enters B. warming the air before it enters C. interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid D. protecting the surface of alveoli from dehydration and other environmental variations