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Superior vena cava
interior vena cava
interventicular septum - seperates the let and right side of the heart
atria - blood reservoir
     right atrium
     left atrium
ventricle - pumps the blood
      right ventricle
      left ventricle
valve - avoid the backflow of blood
       tricuspid valve
       bicuspid valve
pulmonary vein
pulmonary artery
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The components of the circulatory system are vessels, heart, and blood. The three types of vessels in a closed circulatory system are arteries, capillaries, and veins. Arteries transport blood away from the heart to the various organs in the body. Veins return blood to the heart after it circulates through the body. Capillaries form an elaborate network of tiny vessels that convey blood between arteries and veins.
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