BRAINCAKEFeatures of A Specialised Exchange Surface
Exchange Surfaces:
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Key terms in this lesson
- diffusion
- The net passive movement of molecules or ions from a region of higher concentration to a region of lower concentration, down a concentration gradient.
- alveolus
- A tiny, thin-walled air sac in the lungs, surrounded by capillaries, that is the site of gas exchange.
More in Exchange of Gases
- Tissue Fluid
- The Need for Specialised Exchange Surfaces
- Surface Area to Volume Ratio
- The Rate of Diffusion
- Gas Exchange in Unicellular Organisms
- Gas Exchange in Insects
- Diffusion Gradient
- Mass Transport
All 28 lessons in Exchange of Gases · All AQA AS-level Biology topics