Name the largest organ in the human body.

The skin is indeed the largest organ in the human body. It performs several critical functions that are essential for overall health and well-being. The primary role of the skin is to act as a protective barrier, preventing pathogens, chemicals, and physical injuries from entering the body. Additionally, it helps regulate body temperature through mechanisms like sweating and blood vessel dilation or constriction. The skin also plays a vital role in sensory perception, allowing us to feel touch, pain, temperature, and pressure.

Covering approximately 1.5 to 2 square meters in adults and accounting for about 15% of total body weight, it surpasses other organs in size. In contrast, while the heart, liver, and lungs are crucial organs within the body system, each of them does not cover as much surface area as the skin. For example, the heart is a muscular organ that pumps blood, the liver is involved in detoxification and metabolism, and the lungs are responsible for gas exchange. However, none of these organs can match the skin's extensive surface area or the functionality it provides as the body's first line of defense and a regulator of various physiological processes.