Read Diving and Nitrogen Uptake
A short NSEB read on diving and nitrogen uptake, followed by the linked original question(s).
Diving and Nitrogen Uptake is the central idea in this question pattern. Identify the condition in the stem before applying the method below.
Core idea
As diving mammals descend, flexible lungs compress and alveoli collapse, shifting gas into less-compliant airways with reduced exchange. This limits additional nitrogen diffusion into blood at depth and reduces decompression risk on ascent. Oxygen storage in blood and muscle supports the dive, but it is lung compression that limits nitrogen uptake.
Lung collapse limits nitrogen uptake
At depth, lung collapse moves air away from gas-exchange surfaces and limits further nitrogen diffusion into blood.
OlympIQ exam lens
- ✓As diving mammals descend, flexible lungs compress and alveoli collapse, shifting gas into less-compliant airways with reduced exchange.
Identify the biological mechanism first, then check that the option states it accurately and answers the exact question.
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