Skip to Main Content

++

CHAPTER OBJECTIVES

++

At the end of this chapter, the learner will be able to:

++

  1. Identify each layer of the skin and its components and discuss their function.

  2. Relate the function of each cell type to the overall function of the integumentary system.

  3. Recognize the role of non-cellular components of skin in maintaining a healing integumentary system.

  4. Diagnose tissue injury based on the depth of skin loss.

++

SKIN

++

Skin is an important part of one's personality and character; a lot can be learned by observing an individual's skin and its abnormalities. Wrinkles are an indication of one's mood, age, social habits, or overexposure to the sun. The color reflects one's ethnicity as a result of the melanin content; the texture, of one's life occupation from repeated mechanical forces or weather exposure. Skin reflects one's emotions as it moves fluidly with the underlying muscles and connective tissue. Skin abnormalities can be a response to a disease process, injury, allergy, or medication. But what does the skin have to do with wound healing? In order to be considered closed, a wound has to have full re-epithelialization, defined as new skin growth, and no drainage or weeping from the pores. An appreciation for the anatomy and physiology of the integumentary system and the skin's role in healing is needed to understand wound closure, complete with optimal aesthetics and function.

++

ANATOMY OF THE SKIN

++

The skin is a complex, dynamic, multilayered organ that covers the body, making it the largest single organ. It comprises 15–20% of the total body weight; if laid out flat, the skin would cover a surface of 1.5–2 m2.1 Embedded in the layers are a plethora of cells, vessels, nerve endings, hair follicles, glands, and collagen matrixes, each performing a specific task that as a whole enables the skin to protect and preserve the rest of the body. Both the cellular and non-cellular components of the epidermis and dermis are described in TABLE 1-1 and 1-2.

++
Table Graphic Jump Location
Table 1-1  

Cellular Components of Skin

 

Want remote access to your institution's subscription?

Sign in to your MyAccess profile while you are actively authenticated on this site via your institution (you will be able to verify this by looking at the top right corner of the screen - if you see your institution's name, you are authenticated). Once logged in to your MyAccess profile, you will be able to access your institution's subscription for 90 days from any location. You must be logged in while authenticated at least once every 90 days to maintain this remote access.

Ok

About MyAccess

If your institution subscribes to this resource, and you don't have a MyAccess profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus.

Subscription Options

AccessPhysiotherapy Full Site: One-Year Subscription

Connect to the full suite of AccessPhysiotherapy content and resources including interactive NPTE review, more than 500 videos, Anatomy & Physiology Revealed, 20+ leading textbooks, and more.

$595 USD
Buy Now

Pay Per View: Timed Access to all of AccessPhysiotherapy

24 Hour Subscription $34.95

Buy Now

48 Hour Subscription $54.95

Buy Now

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.