Veins
- Created by: Emma
- Created on: 08-05-13 18:16
Other questions in this quiz
2. How are veins formed?
- By capillaries that join up
- By arteries that join up
3. What is the pressure like in the veins?
- Low pressure, so the walls dont need to be very thick
- High pressure, so the walls need to be very thick
4. Why do veins have valves?
- To keep the blood flowing in the right direction
- To prevent the blood from flowing in the right direction
5. What is the lumen like in veins?
- It is large to help the blood flow despite the low pressure
- It is small to help the blood flow despite the low pressure
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