Epidermis - The protective surface layer of the skin, it consists of five layers, Dermis - The thickest layer of the skin containing the hair follicle, blood supply, sweat glands, nerve endings, and lymph vessels, Subcutaneous layer - The fatty layer – provides insulation and energy for the body, Sensory nerve endings - Sensory organs for detecting heat, touch, cold and pain, Blood supply - Provides oxygen and nutrients to feed the skin and hair and removes waste products, Sebaceous gland - Produces sebum to lubricate the hair and skin, Dermal papilla - New cells for hair growth are produced, Sweat gland - Produces sweat to cool the body, Arrector pili muscle - Muscle contracts to raise the hair into an upright position to trap in air for warmth, Hair follicle - The pocket in which the hair grows, Hair shaft - The part of the hair above the skin and scalp – provides protection to the scalp, Hair bulb - Created as new hair cells form, Cuticle - Forms protective surface to the hair, Cortex - Contains colour pigments & gives hair its strength , Medulla - Central part of the hair-no known function, Lymph vessels - Filter and transport fluid away from the tissues,

Skin structure

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