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The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. The heart and blood vessels together make up the circulatory system. The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs.
| Autor | John Hill Hewitt |
|---|---|
| Páginas | 4 |
| Publicación | 1849 |
| Idioma original | 🇬🇧 EN |