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Vor 2 Tagen · Learn about the structure and function of the human heart, a four-chambered double pump that circulates blood through the body. Explore the history, evolution, and diseases of the heart, and see diagrams and videos.
- The Editors of Encyclopaedia Britannica
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels of the circulatory system. [1] . The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. [2] .
Heart formed in Seattle, Washington in 1973 and have rocked on through the years under the sibling core of Ann and Nancy Wilson. The group has released 16 studio albums, hitting the Top 10 seven times and topping the Billboard 200 with 1985’s Heart.
heart ist eine Organisation, die von der American Heart Association unterstützt wird und wissenschaftliche Leitlinien für Reanimation und kardiovaskuläre Notfallmedizin herausgibt. Sie bietet Kurse für Erste Hilfe, HLW und Pädiatrie an und berichtet von Erfolgsgeschichten aus verschiedenen Ländern.
3. Nov. 2023 · The heart is a muscular organ that pumps blood around the body by circulating it through the circulatory/vascular system. It is found in the middle mediastinum, wrapped in a two-layered serous sac called the pericardium.
Vor einem Tag · The AHA is a nonprofit organization that works to improve cardiovascular health and prevent stroke. Find out how to donate, learn CPR, get healthy recipes, join a Heart Walk and more.
