PPT-Diseases of the Epidermis and Dermis

By Hussein Al Naji PITYRIASIS Pityriasis scales are accumulations of keratinized epithelial cells sometimes softened ampmade greasy by the exudation of serum or sebum Primary pityriasis. 13 The dermis is approximately 15 to 40 times as thick as the epidermis It consists of three layers Papillary layer The dermal area that projects into the intervals between the epidermal ridges The fiber components are thin and richly supplied wit T. . 201. 3 BELLUS MEDICAL. . LLC. .. . ALL. . RIGHT. S . RESE. R. VED.. Advanced . Microneedling. . Training. Ho. w. . Doe. s. . Medical . Needlin. g. . W. ork?. 0.5mm – 3.0mm. Uses very fine, surgical stainless steel needles to make channels into the epidermis and dermis to release growth factors . What are the major characteristics of the skin?. Waterproof, stretchable,washable, and permanent-press, that automatically repairs small cuts, rips and burns and is guaranteed to last a lifetime.. Surface area of up to 2.2 square meters. Integumentary System. First line of defense. Structure – classified as a membrane. Epidermis – epithelial layer. Dermis – vascular connective tissue. Subcutaneous layer – loose – collagen + adipose. THE INTEGUMENTARY IS THE LARGEST ORGAN OF THE BODY. IT CONSISTS OF TWO COMPONENTS:(1) THE SKIN, AND (2)THE EPIDERMAL DERIVATIVES, SUCH AS THE HAIR, NAILS AND GLANDS.. THE SKIN IS OF PARTICULAR SIGNIFICANCE IN A CLINICAL EXAMINATION. FOR EXAMPLE, THE COLOR OFTHE SKIN MAY INDICATE THE EXISTENCE OF A PATHOLOGIC CONDITION: A YELLOW COLOR INDICATES JAUNDICE; A BLUE-GRAY COLOR MAY INDICATE CYANOSIS, REFLECTING A PATHOLOGIC CONDITION OF CARDIOVASCULAR AND RESPIRATORY FUNCTION S; A PALE COLOR IS INDICATIVE OF ANEMIA; LACK OF SKIN PIGMENTATION SUGGESTS ALBINISM, A GENETIC TRAIT CHARACTARIZED BY LACK OF THE ENZYME TYROSINASE, INVOLVED IN THE CONVERSION OF THE AMINO ACID TYROSINE TO MELANIN.. Anatomy . & Physiology. ivyanatomy.com. . Skin and Its Tissues. An . Organ . is a . group of . two or more tissues that perform a specialized function. Skin (Cutaneous Membrane) . is the largest organ by weight. Part 1:. Integumentary System. The . integumentary. system consists of the . skin. , . hair. , . nails. , and . glands. .. . Functions. : . protection of internal structures (from abrasion & UV light). 19. 2018. What do you already know about the integumentary system?. Integumentary System. Components. :. Skin (aka . cutaneous membrane . or . integument. ). Hair. Nails. Integumentary System. Components. Only a few millimeters of skin separate our bodies from the dangers of the outside world Yet skin146s multilayered design provides us with the perfect combination of strength flexibility and durabilit The skin – the interface between humans and their environment. Skin is your passport into the world. Skin can decide if you are : . or. criminal. innocent. Skin can decide your race. Skin is the largest organ in the body. . of. . the. skin. The. skin. l. argest. . organ of the bod. y. protects . us from microbes and the elements. . helps . regulate body temperature. and permits the sensations of touch, heat, and cold. The thickness of the epidermis is varies according to the region of the body, reaching maximum thickness about 4mm in the back. Dermis contain two layers the outermost . papillary layer. and deeper . papillary dermis. s. weat duct. hypodermis. s. weat glands. s. weat duct. melanocyte. Melanocytes & Langerhans Cells. melanocytes. Langerhans cells. sb. sp. sg. sc. Slide 0059: Lip. o. rbicularis . Introduction . Organs are composed of two or more kinds of tissues. The skin and its accessory organs constitute the integumentary organ system. Types of Membranes. Serous Membranes. Line body cavities that lack openings to the outside.