One of the best histology sites on the internet! A characteristic feature of the human skin is the apparent lack of hair (pili) on most of the body surface. Each component has a unique structure, function, and histology. Consult a textbook for illustrations (e.g., pp. -General functions of the integumentary system are: Protection from mechanical injury. Most of the skin is haired although the hair in most areas is short, fine and only lightly pigmented. Hair (with arrector pili muscle). skin and appendages Histology 1. A maturing scar, however, does not fully recover its preinjury histology. Structure of the skin All of the components of skin contribute to this variation. Learning histology was never so easy! The skin appendages are epidermal and dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. 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) 1 This maturation process is further outlined in Table 5-1. This new molecular histology of skin appendages is the foundation for forming new hypotheses on how molecules are mechanistically involved in skin appendage development and for designing experiments to test them. Each component has a unique structure, function, and histology. Start studying Histology Lippincott Chapter 8 (Skin and Epidermal Appendages). The skin appendages are epidermal and dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. Skin & Appendages Dr. Shahbaz Ahmad PT DPT[UIPT][UOL] MS-MSK-PT [UIPT][UOL]* Lecturer [LIHS][LCPS] 2. Skin appendages are epidermal & dermal derived components of the skin that include hair, nails, sweat glands, and sebaceous glands. Skin appendages are derived from the skin and include hair, nails, and glands. 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. 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. Nails. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Skin varies markedly over different parts of the body. 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. Unit VII – Problem 8 – Histology: Skin & Appendages -The integumentary system consists of the skin and appendages which include: Sweat glands. This is actually not quite true. A comprehensive, fun and entertaining site devoted exclusively to histology. This site includes histology quizzes, histology games, slides, mnemonics, histology puzzles and tons of information about histology. Thickness of epidermis. Appendages of the Skin Hair. Sebaceous glands. This may also lead to the modulation of healing and regeneration processes in future treatment modalities. 42-43 in Histology for Pathologists, Sternberg, 1998; newer edition: Mills, Histology for Pathologists, 3rd ed., 2007). This type of hair is called vellus hair. More with flashcards, games, slides, mnemonics, histology games, and glands in! Of information about histology that include hair, nails, and more flashcards. Processes in future treatment modalities, Sternberg, 1998 ; newer edition: Mills, histology for Pathologists, ed.... 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