Gas exchange
What Gas exchange means in Physical Education GCSE, as defined for OCR.
Definitions of Gas exchange
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
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Reference: OCR
Oxygen moves from the air inside each alveolus into the blood, while carbon dioxide moves from the blood into the alveolus to be breathed out.
Occurs at the alveoli, where oxygen diffuses into the blood and carbon dioxide diffuses out.
Topics that use Gas exchange
- 1.1.d. The cardiovascular and respiratory systems - Structure and function of the respiratory system (OCR GCSE)
Related terms
- Alveoli
- Diaphragm structure and action
- Diffusion
- Intercostal muscle action
- minute ventilation
- Pressure and volume changes in the thorax
- tidal volume
- Air pathway
Using Gas exchange in the exam
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