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Blood Vessel - Coggle Diagram
Blood Vessel
Capillary
-oxygen passes through the capillary wall into the muscle cell
-movement of substances like oxygen and carbon dioxide
thin wall
-two layers
-inner wall of endothelial cells
-a sieve like basement membrane
-can carry one blood cell at a time
-no valve
Artery
carries oxygenated blood away from the heart at high pressure
-strong outer layer
-a muscle and elastic fibre middle layer
-thin endothelial lining
-a narrow central lumen which expands and recoils with the pressure with each heartbeat
-blood flows through the hollow centre, lumen
-has no valves
Veins
-carries deoxygenated blood into the heart
-thin outer wall
-a thin layer of muscle and elastic fibre middle layer
-thin endothelial lining
-large central lumen which offers less resistance to low pressure blood
-blood flows through the hollow centre, lumen
-has valves to prevent backflow