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histology of the appendages of the skin

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