The skin consists of two layers, the epidermis and the dermis. The epidermis is the surface layer, exposed to the outside world. Beneath it is the dermal layer, which lies above the subcutaneous tissue level. Epidermal thickness over the body is 0.1–0.15mm, quite thin, except for the epidermis of the heel and the palm of the hand, which is a bit thicker. The dermis is generally thicker than the epidermis, measuring 1–2 mm (Fig. 1.1).
KeywordsHair Follicle Sebaceous Gland Dermal Papilla Root Sheath Outer Root Sheath
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