What is considered the largest organ of the body?

The skin is considered the largest organ of the body due to its extensive surface area and various functions. It covers the entire body and serves multiple critical roles, including protection against environmental hazards, regulation of body temperature, and sensation. The skin also plays a vital role in the immune response and in maintaining hydration levels.

In contrast, while the heart, liver, and lungs are essential organs with important functions, none of them have the same size or surface area when compared to the skin. The heart pumps blood, the liver processes nutrients and detoxifies harmful substances, and the lungs are responsible for gas exchange in the body. However, none of these organs cover the body like the skin does, making it the largest organ overall.