Physical Education GCSE
Diffusion
What Diffusion means in Physical Education GCSE, as defined for OCR.
Definitions of Diffusion
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Reference: OCR
The process by which oxygen moves into the blood and carbon dioxide moves out of the blood at the alveoli.
The transfer of gases from a higher concentration to a lower concentration.
Topics that use Diffusion
- 1.1.d. The cardiovascular and respiratory systems - Structure and function of the respiratory system (OCR GCSE)
Related terms
- Alveoli
- Diaphragm structure and action
- Gas exchange
- Intercostal muscle action
- minute ventilation
- Pressure and volume changes in the thorax
- tidal volume
- Air pathway
Using Diffusion in the exam
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