Veins have a wide lumen for high flow, thinner walls, and valves to prevent backflow.
Veins have a wide lumen to maximize blood flow and thinner walls with less muscle and elastic tissue compared to arteries; they also contain valves to prevent backflow.
| Front | specialised structure of veins |
|---|---|
| Back | wide lumen to maximise flow, thin outer layer and inner muscle, veins preventing backflow and pooling |
Tags: 6_2_blood_system
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