Biology GCSE
veins
What veins means in Biology GCSE, as defined for AQA, OCR.
Definitions of veins
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Reference: AQA
Blood vessels that carry blood back to the heart and have relatively thin walls and valves that prevent the backflow of blood.
Vessels that have thin walls, wide lumens, and valves.
Topics that use veins
- The heart and blood vessels (AQA GCSE)
- The challenges of size (OCR GCSE)
Related terms
- arteries
- double circulatory system
- active transport of minerals
- blood plasma
- boundary layer
- Capillaries
- Capillary network
- Closed system
Using veins in the exam
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