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4.1: Introduction to the Integumentary System

  • Page ID
    63382

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    Chapter Learning Objectives

    After studying the chapter, you will be able to:

    • Describe the functions of the integumentary system and the role it plays in homeostasis
    • Describe the layers of the skin and the functions of each layer
    • Describe the accessory structures of the skin and the functions of each
    • Describe the changes that occur in the integumentary system during the aging process
    • Discuss several common diseases, disorders, and injuries that affect the integumentary system
    Granddaughter gives a loving hug to her grandmother
    Figure \(\PageIndex{1}\): A grandmother, in Villas Flores Mexico, having described her love for her granddaughter.  Our skin is the first line barrier between us and the outside world, with damages accumulating over time. Chronologically aged skin is characterized by decreased recovery capacity, altered permeability of the superficial epithelial cells, epithelial cell atrophy, and decreased amounts of fibroblasts and collagen in the underlying connective tissues.  (Image credit: "Granddaughter's Love for the Grandmother Raising Her" by Jim McKinney is licensed under CC BY-SA 4.0, via Wikimedia Commons.)

    What do you think when you look at your skin in the mirror? Do you think about covering it with makeup, adding a tattoo, or maybe a body piercing? Or do you think about the fact that the skin belongs to one of the body’s most essential and dynamic systems: the integumentary system? The integumentary system refers to the skin and its accessory structures, and it is responsible for much more than simply lending to your outward appearance. In the adult human body, the skin makes up about 16 percent of body weight and covers an area of 1.5 to 2 m2. In fact, the skin and accessory structures are the largest organ system in the human body. As such, the skin protects your inner organs and it is in need of daily care and protection to maintain its health. This chapter will introduce the structure and functions of the integumentary system, as well as some of the diseases, disorders, and injuries that can affect this system.

    Contributors and Attributions


    This page titled 4.1: Introduction to the Integumentary System is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Jennifer Lange et al..

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