Blood Vessels
- Created by: HLeiper
- Created on: 10-04-14 14:24
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- Blood Vessels
- Arteries
- Walls are strong and elastic - high pressure
- Small Lumen
- Capillaries
- Very small - carry blood as close to every cell as possible
- Permeable walls one cell thick - diffusion in and out
- Very small lumen
- Veins
- Bigger Lumen - helps blood flow
- Elastic Fibres and Smooth Muscle - low pressure
- Valves - blood flows in the right direction
- Arteries
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