What is the primary purpose of the integumentary system?

The integumentary system's primary purpose is indeed to protect the body from external damage and pathogens. This system includes the skin, hair, nails, and associated glands, all of which play critical roles in maintaining the body's integrity against environmental threats.

The skin acts as a physical barrier that prevents harmful substances, such as bacteria and viruses, from entering the body. It also protects against physical injuries, UV radiation, and chemical irritants. Additionally, the integumentary system is involved in the immune response, contributing to the body’s ability to detect and respond to infections.

While the integumentary system does have secondary functions, such as aiding in temperature regulation and sensation, its primary role is centered around protecting the body. This protective function is vital for maintaining overall health and preventing illness, showcasing why this choice is the most accurate description of the integumentary system's main purpose.