Blood vessels
- Created by: Remya Salimkumar
- Created on: 28-04-15 22:19
View mindmap
- BLOOD VESSELS
- ARTERIES
- Thick wall with thick layer or collagen
- Endothelium folded
- prevents damage as can stretch under pressure
- Thick layer of elastic tissue
- Thick layer of smooth muscle
- Narrows lumen
- Can carry, withstand and maintain high blood pressure
- Thick layer of elastic tissue
- Thick wall with thick layer or collagen
- Endothelium folded
- prevents damage as can stretch under pressure
- VEINS
- Carry blood at low pressures
- not thick
- Larger Lumen
- ease of blood flow
- Thin layers of collagen, smooth muscle and elastic tissue
- contain valves
- Prevent backflow of blood
- Thin walls mean vein can be flattened by skeletal muscles
- Pressure applied to force blood along
- Carry blood at low pressures
- CAPILLARIES
- Very thin
- single layer of flattened endothelium
- short diffusion distance
- single layer of flattened endothelium
- Narrow lumen
- same diameter of red blood cell
- ensures blood cells are squeezed so that they give up oxygen
- same diameter of red blood cell
- Very thin
- ARTERIES
Comments
No comments have yet been made