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Biology 12 discussion

M

mrpaudel

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yeah..it was easy..!! did well..but did some silly mistakes..so think wil get around 32..!
 
I

ideggkr

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histephenson007 said:
charming said:
sakibfaiyaz said:
What should have been the answer to the question about emphysema? I gave 1 and 3
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u gave two answers for one mcq?
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I chose the same ^^
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well

Emphysema both decreases surface area and increases diffusion pathway
so it should've been 1,2,3

---- from a medical website
Symptoms of emphysema:
- Abnormal dilation of air spaces with destruction of alveolar walls
- Inflammation and scarring, reducing size of lumen of airways and reducing lung elasticity
- Hypersecretion of mucus, again reducing lumen size and increasing distances for gas diffusion
 
Talha

Talha

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dude r u sure it was 1 2 3.. i wrote also dis but many ppl sayin it was 1 nd 3 ..
 
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ideggkr

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Talha said:
dude r u sure it was 1 2 3.. i wrote also dis but many ppl sayin it was 1 nd 3 ..
Click to expand...

Yes obviously due to broken elastin,

alveoli are unable to expand and recoil properly.

If you imagine alveoli expanding less, they would be more distant away from capillaries surrounding them.
 
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