Healthy skin. Illustration of a section through skin. At top is the cornified layer (white), a protective layer of dead skin. Beneath it is the epidermal layer (brown) and the dermis (pink). Under the dermis is an insulatory layer of subcutaneous fat (yellow). A hair follicle (lower left) with a bulbous sebaceous gland and a muscle (centre, brown) attached to it, is in the dermis. There is a nerve fibre network (yellow) with receptors for pain, touch & heat. At centre right is a sweat gland (pink) with a duct running to the surface pore. Blood capillaries (blue and red) are at right.
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