The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. The pumped blood transports oxygen and nutrients to the body while transporting metabolic waste such as carbon dioxide into the lungs. In humans, the heart is about the size of a closed fist and is placed between the lungs, in the central compartment of the chest.

Heart

by Sammit

The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. The pumped blood transports oxygen and nutrients to the body while transporting metabolic waste such as carbon dioxide into the lungs. In humans, the heart is about the size of a closed fist and is placed between the lungs, in the central compartment of the chest.

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physics