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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