WebYour heart is a strong muscle that pumps blood to your body. A normal, healthy adult heart is about the size of your clenched fist. Just like an engine makes a car go, the heart keeps your body running. The heart has two sides, each with a top chamber (atrium) and a bottom chamber (ventricle). WebDec 2, 2024 · Your heart's electrical system controls your heartbeat, beginning in a group of cells at the top of the heart (sinus node) and spreading to the bottom, causing it to contract and pump blood. Aging, …
Ventricular assist device (VAD) - Mayo Clinic
WebJan 21, 2024 · Your heart is a muscle. Just like your bicep, the more you work your heart, the bigger and stronger it gets. During moderate- to high-intensity exercise, your muscles and tissues demand more nutrients and oxygen, which means that your heart must work harder and pump faster to meet those needs, says Dr. Cho. WebSep 30, 2024 · The heart sends deoxygenated blood to the lungs, where the blood loads up with oxygen and unloads carbon dioxide, a waste product of metabolism. Together, the heart, blood, and blood vessels —... how many us soldiers died in war
Heart 101 National Geographic - YouTube
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