BSIP, JACOPIN / SCIENCE PHOTO LIBRARY BSIP, JACOPIN / SCIENCE PHOTO LIBRARY
Skin section. Artwork showing a section through human skin, revealing the different layers. The uppermost layer is the epidermis (orange). This is topped by the stratum corneum (cornified layer), a layer of dead flattened skin cells which are continuously sloughed off and replaced by new cells from below. Beneath the epidermis is the dermis. This layer contains hair follicles and coiled tubular sweat glands (blue). Each hair shaft is associated with a sebaceous gland (one seen to the right of the sectioned hair). It also contains blood vessels (blue and red) and sensory nerves (yellow). Beneath the dermis is the fatty subcutaneous layer (yellow).
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