The integumentary system, or simply, the integument, protects the inside of the body. The integument includes skin, hair, feathers, fur, toenails, fingernails, and so forth.
"Integumentary."
The major organs of the integumentary system are the skin, hair, nails, and exocrine glands. These organs work together to provide protection, regulate body temperature, and support sensory functions.
This is called the integumentary system.