Here is a simple English topic about the *function of the heart*: *Topic: The Function of the Heart* The heart is a muscular organ that pumps blood throughout the body. It works like a pump to send oxygen-rich blood to the organs and bring back carbon dioxide and waste products. The heart has four chambers: two atria (upper chambers) and two ventricles (lower chambers). The right side of the heart receives blood low in oxygen from the body and sends it to the lungs. The left side receives oxygen-rich blood from the lungs and pumps it to the rest of the body. The heartbeat is controlled by electrical signals that make the heart contract and relax. A healthy heart beats about 60 to 100 times per minute. *Example:* When you run, your heart beats faster to supply more oxygen to your muscles. Let me know if you want it even simpler or translated.

*Heart Attack (Myocardial Infarction)* A heart attack happens when the blood flow to a part of the heart is blocked, usually by a blood clot. This blockage prevents oxygen from reaching the heart muscle, causing tissue damage. Common symptoms include chest pain, shortness of breath, nausea, and sweating. Immediate medical help is critical to reduce heart damage and save lives. Healthy lifestyle choices like eating well, exercising, and avoiding smoking can help prevent heart attacks.

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