The size of the average adult heart is approximately the size of a fist. It measures about 12 centimeters (or 5 inches) in length, 8 centimeters (or 3.5 inches) in width, and 6 centimeters (or 2.5 inches) in depth.
The weight of the heart varies depending on age, gender, and physical condition, but on average, it weighs between 250 and 350 grams (or 9 and 12 ounces).
The heart is located in the chest cavity, between the lungs, and is surrounded by a protective sac called the pericardium. It is made up of four chambers: the right atrium, left atrium, right ventricle, and left ventricle. The atria are smaller chambers that receive blood from the body or lungs and pump it into the larger, more muscular ventricles, which then pump the blood out to the body or lungs.
The heart is responsible for circulating blood throughout the body, supplying vital oxygen and nutrients to the organs and tissues, and removing waste products. It does this by contracting and relaxing rhythmically, which creates the pressure necessary to propel blood through the circulatory system.
Overall, the heart is a vital organ that plays a crucial role in maintaining our overall health and wellbeing.