Hint: Its multifunctional nature makes it a vital component of overall health and well-being.

The body's largest organ is the skin, which serves as the primary barrier protecting the body from environmental hazards such as pathogens, chemicals, and physical injuries. The skin is composed of three main layers: the epidermis, dermis, and subcutaneous tissue, each playing a critical role in protection, temperature regulation, sensation, and hydration. Covering an average of 22 square feet in adults and accounting for approximately 16% of total body weight, the skin is not only essential for physical protection but also for the synthesis of vitamin D when exposed to sunlight. Its multifunctional nature makes it a vital component of overall health and well-being.