Blood Vessels
- Created by: Eve Simmons
- Created on: 05-12-12 10:16
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- blood vessels
- Arteries
- small lumen
- high hydrostatic pressure
- Wall contains smooth muscle
- Thick walls with elastic tissue to stretch and recoil
- Endothelium is folded allowing to stretch.
- capillaries
- Only has endothelium
- Lumen is very narrow
- Allow exchange of materials via tissue fluid.
- As lumen is small it forces red blood cells through causing higher hydrostatic pressure than in veins.
- Veins
- Valves to prevent back flow
- Thinner layers of elastic tissue, smooth muscle and collagen.
- Arteries
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