Diffusion - The movement of gas from an area of high to low pressure, Haemoglobin - Carries oxygen within the blood, Bohr shift - Rightward shift in the curve due to decreased blood pH, Oxyhaemoglobin - The product of haemoglobin + oxygen, Concentration/ pressure gradient - Explains diffusion, the steeper the gradient the faster diffusion occurs, Partial Pressure - The pressure exerted by an individual gas within a mixture of gases, Oxyhaemoglobin disassociation curve - Graph to help understand how haemoglobin transports and releases oxygen,

A level Respiratory terms

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