short diffusion pathway
What short diffusion pathway means in Biology A-Level, as defined for AQA.
Definitions of short diffusion pathway
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Reference: AQA
The extremely short distance between air and blood because the epithelium lies against a capillary endothelium that is also one cell thick.
A feature of gas exchange surfaces such as a thin surface one cell thick, giving rapid diffusion.
Topics that use short diffusion pathway
- Gas exchange (AQA A-Level)
Related terms
- antagonistic intercostal muscles
- Bronchioles
- Correlation
- counter-current flow
- diffusion at the alveolus
- large surface area
- Lungs
- maintaining a concentration gradient
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