What is the largest organ in the human body?

The largest organ in the human body is indeed the skin. It performs several essential functions, including acting as a barrier to protect internal organs from pathogens, regulating temperature through sweat and blood flow, and enabling sensations such as touch, pain, and temperature. In adults, the skin covers an average area of about 22 square feet and can account for roughly 15% of a person's total body weight.

The skin's structure comprises multiple layers, including the epidermis, dermis, and hypodermis, each with specific roles in protection, sensory perception, and thermoregulation. This multifunctionality not only makes the skin vital for maintaining homeostasis but also underscores its importance as the largest organ in the human body, overshadowing the size and function of other organs like the heart, liver, and lungs.