Anatomy & Physiology
Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Chapter 5, Problem 1ILQ

The skin consists of two layers and a closely associated layer. View this animation (http://openstaxcollege.org/l/layers) to learn more about layers of the skin. What are the basic functions of each of these layers?

Expert Solution & Answer
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Summary Introduction

To write:

The different layers composing the skin.

Introduction:

The skin is composed of the three main layers, namely the epidermis, the dermis, and the hypodermis. The epidermis is the outermost layer while the dermis is present just below the epidermis. The hypodermis is the deepest layer of the skin.

Explanation of Solution

The epidermis, which is the outermost layer of the skin, functions as a waterproof barrier. It protects the tissue lying beneath it from infection, chemicals, dehydration and any kind of mechanical stress.

The dermis is present just beneath the epidermis. It is composed of tough connective tissue and include different types of the glands and the cells. The blood vessels in this layer provide nourishment to the tissues.

The hypodermis layer is made up of the connective tissue and fat. It functions by attaching the dermis to the muscles and the bones. Moreover, this layer stores fat as an energy reserve.

Conclusion

The skin is made up of three layers, namely the epidermis, the dermis and the hypodermis. The epidermis act as the protective layer. The dermis contains the blood vessels, and the hypodermis contains the fat.

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