Which organ is considered the largest in the human body?

The skin is considered the largest organ in the human body due to its extensive surface area and significant role in protection, regulation, and sensation. The total area of the skin in an average adult can range from about 1.5 to 2 square meters. It serves as a barrier against pathogens, helps regulate body temperature through sweat and blood flow, and allows for various sensory perceptions.

In contrast, while the liver is often referred to as the largest internal organ and plays crucial roles in metabolism and detoxification, it does not surpass the surface area of the skin. The heart and lungs, although vital to circulatory and respiratory functions respectively, are smaller in size compared to the total area of the skin. Therefore, the skin stands out as the largest organ by surface area, highlighting its importance in overall body function and health.