Well, this is kind of a trick question. Your heart is actually a muscular organ. An organ is a group of tissues that work together to perform a specific function. In the case of your heart, this ...

The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center. The heart ...

As the central part of the circulatory system, the heart is responsible for pumping blood, supplying oxygen and nutrients, and removing metabolic waste such as carbon dioxide from all the tissues in ...