Question

Anatomy question?

Which of the descriptions below does not explain the effects of air pollution on the respiratory system?

It could restrict air flow through the bronchi.
It could disrupt the rate of ventilation.
It could prevent hemoglobin from binding to oxygen.
It could increase carbon dioxide uptake in alveolar sacs.

I've narrowed this down to B and C, but I'm still not sure if those are even right. I've been working on this quiz since about 2 AM last night and it's getting on my nerves that this information isn't anywhere in my lessons.

Answer 1

but if you're saying it can't PREVENT it, only decrease it... the question asks for which one does NOT describe, so wouldn't that be the answer? @Rushwr

Answer 2

@misty1212 @Mehek14 @mayankdevnani @YoungStudier @agent0smith @Awolflover1

Answer 3

" It could restrict air flow through the bronchi."

Yes, inflammation of bronchi from pollution will decrease the volume of air taken in.

"It could disrupt the rate of ventilation."

Would it make you breathe faster, or slower? I guess as a side effect from insufficient oxygen, you would breather faster..

" It could prevent hemoglobin from binding to oxygen."

Yes, carbon mono- and dioxide will reduce the amount of oxygen binding sites. Carbon monoxide has a greater affinity to hemoglobin than oxygen.

" It could increase carbon dioxide uptake in alveolar sacs."

Yes, higher concentration gradients will cause diffusion of gases through alveolar sacs into circulation.

Answer 4

I also think B is the correct answer