What is the primary purpose of the integumentary system?

The primary purpose of the integumentary system is protection. This system, which includes the skin, hair, nails, and associated glands, serves as the body's first line of defense against environmental hazards such as pathogens, chemicals, and physical injuries. The skin acts as a barrier, preventing harmful substances from entering the body while retaining essential fluids and electrolytes.

In addition to its protective role, the integumentary system also contributes to other important functions, such as temperature regulation and sensory perception. However, these are secondary roles compared to the system's primary function of safeguarding internal structures. While gas exchange is crucial in certain systems, it is not a primary function of the integumentary system. Support is primarily provided by the skeletal system rather than the integumentary system.