Biology A-Level
Exchange at capillaries and return of blood in veins
What Exchange at capillaries and return of blood in veins means in Biology A-Level, as defined for OCR.
Definition of Exchange at capillaries and return of blood in veins
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Reference: OCR
A single endothelial cell layer and narrow lumen give a short diffusion distance and large surface area for exchange, while valves prevent backflow of low-pressure blood.
Topics that use Exchange at capillaries and return of blood in veins
- Transport in animals (OCR A-Level)
Related terms
- Association and dissociation of oxygen
- Carbon dioxide transport forms
- Control of blood distribution by arterioles
- cooperative binding
- double circulation
- Heart anatomy
- Heart rate and rhythm interpretation
- Hydrostatic versus osmotic forces
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