1. How do squamous cells aid the lungs in gas exchange?
- They decrease the distance the gases have to diffuse across.
- They are squashed together, so more of them can fit in an alviolus.
- They increase the distance the gases have to diffuse across
- They speed up gas exchange
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Other questions in this quiz
2. What does squamous mean?
- Tightly packed
3. Why does a large surface area increase the efficiency of the lungs?
- More gas can be exchanged at the same time
- Gas can be exchanged faster
- More types of gas can be exchanged
- The lungs can inflate more.
4. How do the alvioli increase the exchange surface of the lungs?
- They are numerous and folded
- They are small and folded
- They have a large surface area
- They reduce the distance gas has to diffuse across.
5. Why must the lungs maintain the diffusion gradient?
- If the gradient is not maintained, the person will suffocate
- If the gradient is not maintained, the person will get carbon dioxide poisoning.
- If the gradient is not maintained, diffusion will stop because the gases have reached equilibrium
- Diffusion will stop if the gradient is not maintained.