What does the integumentary system primarily consist of?

The integumentary system primarily consists of skin, hair, nails, and mucous membranes, which work together to provide protection, regulate temperature, and facilitate sensory perception. The skin is the largest organ in the body and serves as a barrier against environmental hazards, pathogens, and UV radiation. Hair and nails contribute to this protective function while also playing roles in thermoregulation and sensory functions. Mucous membranes line various cavities and canals, providing additional protection and moisture. This comprehensive structure is vital for maintaining homeostasis and overall health.