42-43 in Histology for Pathologists, Sternberg, 1998; newer edition: Mills, Histology for Pathologists, 3rd ed., 2007). Hair (with arrector pili muscle). Learning histology was never so easy! This may also lead to the modulation of healing and regeneration processes in future treatment modalities. Appendages of the Skin Hair. One of the best histology sites on the internet! Each component has a unique structure, function, and histology. All of the components of skin contribute to this variation. Unit VII – Problem 8 – Histology: Skin & Appendages -The integumentary system consists of the skin and appendages which include: Sweat glands. This type of hair is called vellus hair. The skin appendages are epidermal and dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. Most of the skin is haired although the hair in most areas is short, fine and only lightly pigmented. Start studying Histology Lippincott Chapter 8 (Skin and Epidermal Appendages). Each component has a unique structure, function, and histology. This is actually not quite true. Thickness of epidermis. Wheater’s Functional Histology Layers of Skin 1) Epidermis stratified squamous epithelium epidermal ridges 2) Dermis a) papillary layer small blood vessels, lymph & nerves fine collagen & elastic fibers b) reticular layer vascular plexus, lymph, nerves & appendages compact collagen fibers & thick elastic fibers 3) Hypodermis (subcutaneous) This site includes histology quizzes, histology games, slides, mnemonics, histology puzzles and tons of information about histology. The skin is the largest single organ of the body, typically accounting for 15%-20% of total body weight and, in adults, presenting 1.5-2 m 2 of surface to the external environment. 1 This maturation process is further outlined in Table 5-1. Skin appendages are epidermal & dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. Nails. There is complete loss of skin appendages, incomplete reformation of the rete ridges and papillary dermis, as well as alterations in the collagen fiber bundles. Structure of the skin Skin appendages are derived from the skin and include hair, nails, and glands. The skin appendages are epidermal and dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. A characteristic feature of the human skin is the apparent lack of hair (pili) on most of the body surface. Sebaceous glands. The main functions of the skin are protection (barrier against ultraviolet radiation, microorganisms, and water loss), the synthesis of vitamin D, detection of sensation (e.g., touch, temperature, pain), and the regulation of body temperature. A comprehensive, fun and entertaining site devoted exclusively to histology. 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