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The Circulatory System 6CF4224F-EA6E-441B-8ED5-3D10F00208E9 (Heart…
The Circulatory System
Heart
An organ that pumps blood through the body
Responsible for the flow of blood (with assisstance; nerves, arteries)
Removes carbon dioxide and other wastes
Veins
Responsible for returning deoxygenated blood back to the heart
Veins have thinners walls than arteries
Veins have valves in them that keep the blood flow in one direction
Arteries
Carries oxygenated blood to the heart
Pulmonary Arteries
Carries oxygenated blood to the lungs and heart
Capillaries
Very thin blood vessels
Bring nutrients and oxygen to tissues
Remove wastes
Useful Definitions
Oxygenated
Supplied, treated, or rich with oxygen
Deoxygenated
Remove oxygen from
