BSIP, JACOPIN / SCIENCE PHOTO LIBRARY BSIP, JACOPIN / SCIENCE PHOTO LIBRARY
Skin sections. Artworks of sections through the skin from different areas of the body. From left to right, they are from the palm or sole, the groin or armpit and the rest of the body. The palm skin shows a much thicker epidermis (pale pink, top) than the others, and is richly supplied with sensory nerves (yellow) in the dermis (dark pink). The skin from the groin shows a large hair arising from a follicle. A sebaceous gland (to the right of the hair) produces sebum, an oily substance which waterproofs the hair. A coiled sweat gland (blue) can also be seen leading to the skin's surface through the hair's shaft. Skin protects the body from infection.
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