Blood Vessels
- Created by: ODunn
- Created on: 14-02-17 14:49
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- Blood Vessels
- Arteries
- Carry Blood away from the heart
- Have thick muscular walls
- Have small passageways for blood
- Contains blood under high pressure
- Veins
- Carry blood to the heart
- Have thin walls
- Have larger internal lumen
- Contains blood under low pressure
- Have valves to prevent blood flowing backwards
- Capillaries
- Found in the muscles and lungs
- Microscopic- one cell thick
- Very low blood pressure
- Gas exchange takes place here. Oxygen passes through the capillary wall and into the tissues, carbon dioxide passes from the tissues into the blood.
- Arteries
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