Anatomy is a great science
Skin ligaments (L. retinacula cutis ), numerous small fibrous bands, extend through the subcutaneous tissue and attach the deep surface of the dermis to the underlying deep fascia. The length and density of these ligaments determines the mobility of the skin over deep structures. Where skin ligaments are longer and sparse, the skin is more mobile, such as […]
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The collagen and elastic fibers in the dermis form a tough, flexible meshwork of tissue. Because the skin can distend considerably, a relatively small incision can be made during surgery compared with the much larger incision required to attempt the same procedure in an embalmed cadaver, which no longer exhibits elasticity. The skin can stretch […]
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Superficial burn (e.g., sunburn): damage is limited to the epidermis; symptoms are erythema (hot red skin), pain, and edema (swelling); desquamation (peeling) of the superficial layer usually occurs several days later, but the layer is quickly replaced from the basal layer of the epidermis without significant scarring. Partial-thickness burn: epidermis and superficial dermis are damaged […]
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Burns are classified as severe if they cover 20% or more of the total body surface area (excluding superficial burns like sunburn), are complicated by trauma or inhalation injury, or are caused by chemicals or high-voltage electricity. One way to estimate the surface area affected by a burn in an adult is to apply the […]
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Fascias (L. fasciae ) constitute the wrapping, packing, and insulating materials of the deep structures of the body. Underlying the subcutaneous tissue (superficial fascia) almost everywhere is the deep fascia. The deep fascia is a dense, organized connective tissue layer, devoid of fat, that covers most of the body parallel to (deep to) the skin and subcutaneous tissue. Extensions from […]
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