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a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.
A big artery that carries blood away from the heart and distrubtes oxygen rich blood to all the arties
collection of cells that are similar in structure and work together to perform a particular function
Identify:, The upper right chamber of the heart, where deoxygenated blood is received from the vena cava and then sent to the right ventricle.
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