What does the integumentary system include?

The integumentary system is primarily responsible for protecting the body and regulating various physiological processes. It includes structures such as the skin, hair, nails, and exocrine glands like sweat and sebaceous glands. The skin itself serves as a barrier against pathogens, helps regulate body temperature, and facilitates the sensation of touch, pressure, and pain. Hair provides insulation and protection, while nails protect the fingertips and enhance the ability to grasp and manipulate objects.

Each component plays a vital role in the overall health and functioning of the body. For example, sweat glands help regulate temperature through perspiration, while the skin's ability to serve as a sensory organ is crucial for interaction with the surrounding environment. Thus, the integumentary system encompasses these essential components, making this answer the most accurate representation of its structure.