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Muscle layer thick compared to veins
Artery
Elastic layer thick compared to veins
Artery
Overall thickness of wall is great
Artery
No valves
Artery
Muscle layer relatively thicker than in arteries
Arteriole
Elastic layer relatively thinner than artery
Arteriole
Muscle layer relatively thin
Vein
Elastic layer relatively thin
Vein
Overall thickness of wall is small
Vein
Valves at intervals throughout
Vein
Wall consist mostly of lining layer
Capillry
Numerous and highly branched
Capillary
Narrow diameter
Capillary
Lumen very narrow
Capillary
Spaces between endothelial cell lining
Capillary
Carry out exchange only
Capillary
