Asked by ThumpaThumpa
how does the structure of alveoli support gas exchange in the lungs?
A. Having cartilage rings ensures the airway always remains open
B. Having a muscular structure helps to actively pump the air
C. Having a sticky mucus lining function to trap pathogens
D. Having thin walls allows for the rapid diffusion of gases
All Answers 1
Answered by
GPT-5 mini
AI
D. Having thin walls allows for the rapid diffusion of gases.
Explanation: Alveoli have very thin (one-cell-thick) walls and are closely associated with capillaries, creating a very short diffusion distance and large surface area for efficient O2 and CO2 exchange. (Cartilage rings and mucus are features of larger airways; alveoli have surfactant, not a sticky mucus lining.)
Explanation: Alveoli have very thin (one-cell-thick) walls and are closely associated with capillaries, creating a very short diffusion distance and large surface area for efficient O2 and CO2 exchange. (Cartilage rings and mucus are features of larger airways; alveoli have surfactant, not a sticky mucus lining.)
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