What is another term for the integumentary system?

The integumentary system is primarily referred to as "the skin," which serves as the body's protective outer layer. It encompasses not only the skin itself but also includes associated structures such as hair and nails, contributing to essential functions like protection, sensation, and thermoregulation. The skin comprises multiple layers that work together to perform these vital roles, making it a key component of the body's overall health and well-being.

Other choices, while related to the integumentary system, specify parts or subcomponents rather than the entire system. Hair and nails are indeed part of the integumentary system but do not represent it in totality. The muscles are unrelated to the integumentary system, as they are part of the muscular system, which is responsible for movement and stability. Hence, referring to "the skin" as another term for the integumentary system accurately captures the essence of what this system encompasses.