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The heart is a vital muscular organ responsible for maintaining continuous blood circulation throughout the body. In Physiological Anthropology, the study of blood flow in the heart is important for understanding how the cardiovascular system supports human adaptation, metabolism, oxygen transport, and maintenance of internal balance. The heart functions as a pump that receives deoxygenated blood from body tissues and sends oxygen-rich blood to different organs, ensuring proper physiological functioning. The human heart consists of four chambers: the right atrium, right ventricle, left atrium, and left ventricle. These chambers work in _________ _______ _______ _____ ________ _________ ___.
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