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Figure 711 tissue repair platelets gather in the

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Figure 7.11 Tissue repair:Platelets gather in the broken blood vessel and form a clot.
10/24/2019NursingABC - Module10/19Mast cellsreleasehistamine, a chemical which helps to dilate blood vessels to bring increased blood andnutrients to the injured area. Histamines help to initiate a localinflammatory response, which signals other cellsin the area to help remove foreign pathogens.Macrophages(a type of white blood cell) work to engulf anddestroy disease-causing pathogens. Once the dead and foreign cells are removed, the body can begin toreplace the damaged cells.Fibroblasts(Figure 7.12)help to secrete new collagen in the shape of the oldtissue. This collagen framework supports the tissue matrix in the shape of the old cells until new cells are fullydeveloped(Figure 7.13).Figure 7.12 Tissue repair: Fibroblasts secrete a collagen matrix in the shape of the original tissue.
10/24/2019NursingABC - Module11/19Figure 7.13 Tissue repair:collagen network fills in the damaged area as the cells divide and mature.Remodelingis the final phase of wound healing where the tissue matures, and the cells begin to take on theiroriginal functions(Figure 7.14). If the wound is too deep in the tissue a scar forms and some of the originalfunction of the tissue is lost. Ascaris an overgrowth of the fibrous connective tissue which cannot be fullyreplaced by the original tissue.Figure 7.14 Tissue remodeling:Cells divide, mature, and fully replace the damaged tissue.Burns
10/24/2019NursingABC - Module12/19One of the ways that the skin can be injured is through aburn. Burns are classified through the severity of theburn.First degree burns, also called superficial burns, only damage the epidermis layer of the skin(Figure7.15). The burned area becomes dry, red, and painful, without blistering. One example of a first-degree burn isa mild sunburn that does not blister.Figure 7.15First degree burn following a cooking accident.Second-degree burns, also called partial thickness burns, damage the epidermis and part of the dermis layersof the skin. The burn turns red and forms blisters, becoming painful and swollen(Figure 7.16). The dermis hasmany sensory organs embedded within it, so damage to the dermis layer is painful.
10/24/2019NursingABC - Module13/19Figure 7.16Second degree burn of the shoulder. Note the blisters formed on the skin.Third-degree burns, also called full thickness burns, damage the epidermis, the entire dermis and may extendslightly into the subcutaneous layer of the skin. The injured skin typically looks white and may even have a“charred” appearance(Figure 7.17). The extensive damage to the dermis layer of the skin makes third degreeburns extremely painful.
10/24/2019NursingABC - Module14/19Figure 7.17

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Term
Spring
Professor
saito
Tags
Stratum Corneum

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