Biology GCSE
Capillaries
What Capillaries means in Biology GCSE, as defined for AQA.
Definition of Capillaries
Check what you remember
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Reference: AQA
Microscopic vessels with walls one cell thick that link arteries and veins, allowing exchange of substances with tissues.
Topics that use Capillaries
- The heart and blood vessels (AQA GCSE)
Related terms
- arteries
- Capillary network
- Closed system
- Coordination of contraction
- Diffusion
- double circulatory system
- Electrical signalling in the heart
- Gas exchange
Using Capillaries in the exam
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