Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 5 - The Integumentary System - Review Questions - Page 170: 16

Answer

The overall severity of a burn is classified into three subclasses; first-degree, second- degree, and third-degree. These different classifications are determined by the skin layers affected, as well as the affect each one has on the skin. First-degree burns are the most common, with the least amount of damage to the skin. These types of burns cause localized pain and redness. First-degree burns only affect the epidermis. The most common type of this burn is sunburn. This type of burn will take at least 2-4 days to heal. Second-degree burns are less common than first-degree burns, and cause more damage to the skin. These types of burns cause localized pain, redness, and blisters. Second-degree burns affect the epidermis and dermis. This type of burn will take at least three weeks to heal. Third-degree burns are the least common, and cause the most damage to the skin. These types of burns cause little to no pain due to the nerve endings being damaged and blackness to the skin. Third-degree burns completely destroy all layers of the skin, which will typically reveal the bone. This type of burn may heal over a long period of time, but skin grafts are advised to reduce the risk of infection.

Work Step by Step

The overall severity of a burn is classified into three subclasses; first-degree, second- degree, and third-degree. These different classifications are determined by the skin layers affected, as well as the affect each one has on the skin. First-degree burns are the most common, with the least amount of damage to the skin. These types of burns cause localized pain and redness. First-degree burns only affect the epidermis. The most common type of this burn is sunburn. This type of burn will take at least 2-4 days to heal. Second-degree burns are less common than first-degree burns, and cause more damage to the skin. These types of burns cause localized pain, redness, and blisters. Second-degree burns affect the epidermis and dermis. This type of burn will take at least three weeks to heal. Third-degree burns are the least common, and cause the most damage to the skin. These types of burns cause little to no pain due to the nerve endings being damaged and blackness to the skin. Third-degree burns completely destroy all layers of the skin, which will typically reveal the bone. This type of burn may heal over a long period of time, but skin grafts are advised to reduce the risk of infection.
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