Circulatory System

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a flap in the heart that allows blood to flow only from the atrium to the ventricle

any blood vessel that carries blood away from the heart

the movement of blood throughout the body

the largest artery that carries blood from the left ventricle to every part of the body, except the lungs

a tiny blood vessel that carries blood to and from the cells

a structure in the lungs where blood picks up oxygen and releases carbon dioxide

a tube that carries blood, such as an artery, a vein, or a capillary

the lower chamber of the heart, with strong muscles that pump blood to the body