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10 cards from this deck
Open circulatory system
Closed circulatory system
Two (one atrium, one ventricle)
Twice per complete circuit
Deoxygenated blood
L & R atrium, L & R ventricle
0.8 seconds
Sinoatrial node (SA node)
Arteries: thick walls; Veins: thin walls with valves
Single layer of endothelial cells
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