Biology 226 Integumentary System: Burn Classification and Wound Healing Refer to
ID: 3505841 • Letter: B
Question
Biology 226 Integumentary System: Burn Classification and Wound Healing Refer to pages 150 to 151 in your textbook to help you answe Which layer(s) of skin are damaged in a third degree burn? Which layerfs) of skin are damaged in a second degreè burn? Which layer(s) of skin are damaged in a first degree burn? Name: r the following questions. evti c 'tret-4-mi- drm j isterm's To understand the specific effects of each class of burn, it is important to first understand how the body responds to basic tissue damage. A typical response to damaged tissue is called the inflammatory response. This response involves changes in the blood vessels near the site of damage: vasodilation and an increase in permeability. Given that this response is designed to help the body repair damaged tissue, provide a justification for these vascular changes. First degree burns are characterized by pain and redness of the skin. Given the layer(s) damaged in this class of burn, explain what causes these symptoms. Second degree burns are characterized by blistering of the skin. Given the layerts) damaged in this class of burn, explain what causes these symptoms. (HINT: consider what might cause fluid accumulation) Third degree burns are characterized by a yellowish appearance, but no blistering. Given the layer(s) damaged in this class of burn, explain what causes this appearance. 37Explanation / Answer
During a third degree burn, generally all the layers of the skin is damaged and destroyed since the burn extends to the subcutaneous tissues. It damages the outer layer of the skin which is the epidermis and the inner layer of skin known as dermis.
The second degree burn generally involves epidermis and part layer of the epidermis. It leads to pain, blisters, severe swelling of the area etc. The
During the first degree burn, the damage is only restricted to the epidermis and the characteristics for the same are pain, redness and mild swelling.
During burn injury, there is inflammation of the area which is a way to heal the tissue injury damage and this is done by altering the vascular permeability of the burn injury. With the burn, there are inflammatory mediators and cytokines released which disrupts the endothelial barrier increasing the outflow of the macromolecules and fluid from the local injured area through the vessels. This leads to affecting the vascular permeability. There is increase in the leakage of the fluid from the vascular space which creates loss of blood plasma and reduces the blood circulation. This leads to formation of tissue edema.
Symptoms of First Degree Burn
The most common symptoms observed during the first degree burn is skin redness, pain and swelling. The pain is generally mild accompanied by prominent redness. It heals in few days and a little swelling appears with water burst. The skin tends to peel off in few days. If the burn is spread across larger area, the pain might be little more.
Symptoms of Second Degree Burn
Some of the symptoms that is observed during the second degree burn is blisters, deep redness, burned area turns wet and shiny, painful skin to touch, discolored burn. It is of two types which are partial thickness and full thickness. In the former, there are blisters and it generally injures epidermis and upper dermis layer with the color appearing pink or red. The wound takes nearly several weeks to heal. In case of full thickness, the appearance is white or red but generally appear dry which leads to epidermis and dermis damage. It generally requires skin grafting to heal
Symptoms of Third Degree Burn
It is very severe all layers of skin is damaged and destroyed. The burnt areas appear completely charred or black leaving a leathery texture. The wound does not blanch and there is no pain as the burn destroys all the pain receptors with the dermis.
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