The heart is an organ located in the mediastinum of the chest. It is a muscular organ that pumps blood throughout the body, providing oxygen to cells and also removes metabolic wastes. In humans and other animals, the heart is divided into 4 chambers, the left and right ventricle, and the left and right atrium. Fish only have two chambers, while reptiles have 3 chambers.
- Chain is 20 inches
- Heart is about 0.5 inch x 1 inch