Fundamentals of Anatomy & Physiology, Books a la Carte Plus Mastering A&P with Pearson eText -- Access Card Package (11th Edition)
Fundamentals of Anatomy & Physiology, Books a la Carte Plus Mastering A&P with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134478753
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 1CP

Identity the layers of the epidermis.

Expert Solution & Answer
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Summary Introduction

To identify:

The different layers of the epidermis.

Introduction:

Epidermis is the superficial layer of the skin and it act as a protective covering to the body. It is very rigid, resistant to germs and other infections and also protects inner systems and organs of our body. Epidermis is made up of four layers of epithelial cells which are different in their properties.

Explanation of Solution

The four layers of epidermis are as described as follows:

  1. 1) Stratum corneum.
  2. 2) Stratum basale.
  3. 3) Stratum spinosum and
  4. 4) Stratum granulosum.

The stratum corneum is the outermost layer of the epidermis and it varies in thickness at various body parts. It contains the dead cells of the body which shed or cast off and resulting in the generation of new cells.

Stratum basale is the innermost layer of the epidermis which is present much deeper inside. The two other layers stratum spinosum and stratum granulosum are present in between the basal and upper layers.

The stratum spinosum is present at the boundary of basale layer which help in adhering other cells; and the stratum granulosum is located just below the corneum layer. The epithelial cells present in this layer contain a waxy substance which is preventing the entry of water inside the skin.

Conclusion

Epidermis is the superficial layer of the skin and it act as a protective covering to the body.

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Explain composition and function of the epidermis
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Chapter 5 Solutions

Fundamentals of Anatomy & Physiology, Books a la Carte Plus Mastering A&P with Pearson eText -- Access Card Package (11th Edition)

Ch. 5 - Prob. 11CPCh. 5 - Prob. 12CPCh. 5 - Prob. 13CPCh. 5 - Name the two major pigments in the epidermis.Ch. 5 - Why does exposure to sunlight darken skin?Ch. 5 - Prob. 16CPCh. 5 - Prob. 17CPCh. 5 - Prob. 18CPCh. 5 - Describe a typical strand of hair.Ch. 5 - What happens when the arrector pili muscle...Ch. 5 - Once a burn on the forearm that destroys the...Ch. 5 - Prob. 22CPCh. 5 - Prob. 23CPCh. 5 - Prob. 24CPCh. 5 - Which type of skin gland is most affected by the...Ch. 5 - Prob. 26CPCh. 5 - Prob. 27CPCh. 5 - Prob. 28CPCh. 5 - Prob. 29CPCh. 5 - Why can skin regenerate effectively even after...Ch. 5 - Prob. 31CPCh. 5 - Why does hair turn while or gray with age?Ch. 5 - Prob. 1RQCh. 5 - The two major components of the integumentary...Ch. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - The accessory structures of the integument include...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - The primary function of sensible perspiration is...Ch. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 16RQCh. 5 - Prob. 17RQCh. 5 - What two major layers constitute the dermis, and...Ch. 5 - List the four phases in the regeneration of the...Ch. 5 - Contrast insensible perspiration and sensible...Ch. 5 - Prob. 21RQCh. 5 - Prob. 22RQCh. 5 - Prob. 23RQCh. 5 - Prob. 24RQCh. 5 - Prob. 25RQCh. 5 - Prob. 26RQCh. 5 - Prob. 27RQCh. 5 - Prob. 28RQCh. 5 - Prob. 29RQCh. 5 - One of the factors to which lie detectors respond...Ch. 5 - Prob. 31RQCh. 5 - Prob. 1CCCh. 5 - Grandpa has trouble when its hot outside Whats...
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