What is the main function of the integumentary system?

The integumentary system primarily encompasses the skin and its associated structures, such as hair, nails, and glands. Its fundamental role is protection, acting as a barrier that shields the underlying tissues from physical damage, pathogens, and harmful substances. Additionally, it plays a crucial role in regulating body temperature through mechanisms like sweat production and blood flow adjustments to the skin. This system ensures that the body maintains a stable internal environment despite changes in external temperatures.

In essence, the integumentary system is vital for safeguarding the body and maintaining homeostasis, making protection and temperature regulation its main functions.