What is the largest organ of the human body?

The largest organ of the human body is the skin. It serves several vital functions, including protecting the body against external elements, regulating body temperature, and allowing for the sensation of touch. As the first line of defense, skin acts as a barrier against pathogens and physical damage.

In addition to its protective capabilities, skin also plays a role in the body's metabolic processes, such as the synthesis of vitamin D when exposed to sunlight. It covers the entire body, making it not only the largest organ by surface area but also the heaviest, constituting about 15% of an average person's body weight.

Unlike other organs listed, such as the liver, heart, or lungs, which have specific internal functions, skin's extensive surface area and vital protective roles underscore its significance as the largest organ in the human anatomy.