Overview
The integumentary system protects against environmental insults regulates temperature and provides sensory input. It comprises the epidermis dermis and subcutaneous tissue along with hair follicles sebaceous glands and nails. Skin integrity is vital for barrier and immune functions.
Skin Layers
The epidermis provides a protective keratinized barrier and contains melanocytes. The dermis houses vasculature nerves hair follicles and sweat glands. Subcutaneous fat insulates and cushions underlying structures.
Appendages and Function
Hair and nails arise from specialized epidermal structures and serve protective and sensory roles. Sweat and sebaceous glands regulate thermoregulation and skin lubrication. Cutaneous immune cells respond to pathogens and injury.
Clinical Relevance
Dermatologic conditions include infections inflammatory diseases and skin cancer. Imaging is limited but dermatologic assessment and biopsy guide diagnosis. Wound care and systemic therapy address complex skin disorders.