@94poetsar4: The human heart is a vital organ that pumps blood throughout the body, supplying oxygen and nutrients while removing carbon dioxide and waste products. Here are some key points about the human heart: Anatomy: The heart has four chambers: two upper atria and two lower ventricles. The right side pumps deoxygenated blood to the lungs, while the left side pumps oxygenated blood to the rest of the body. Valves: There are four main valves (tricuspid, pulmonary, mitral, and aortic) that ensure unidirectional blood flow through the heart and prevent backflow.

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Sunday 28 September 2025 18:04:47 GMT