The integumentary system : The integumentary system consists of the skin, hair, nails, and associated glands. It serves as the body’s primary barrier against environmental hazards, regulates temperature, and provides sensory information. The skin, the largest organ, has three layers: epidermis (protective outer layer), dermis (contains blood vessels, nerves, and glands), and hypodermis (fatty layer for insulation and cushioning). Together, these components protect, insulate, and maintain…
