What is the body's largest organ?

The largest organ in the human body is indeed the skin. It serves several critical functions, including protection against pathogens, regulation of body temperature, and sensation. Covering the entire surface of the body, the skin has multiple layers, with the epidermis being the outermost layer, followed by the dermis and hypodermis.

The size of the skin is significant, as it can weigh around 8 to 10 pounds and cover approximately 22 square feet in an average adult. This expansive surface area allows the skin to effectively fulfill its roles in protection and sensory input. In contrast, the liver, heart, and lungs, while vital to physiological function and health, are smaller in size when compared to the extensive surface area and mass of the skin. Understanding the functions and importance of skin can help appreciate its role in overall health and how it protects the body from external elements.