Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 32, Skeletal, Muscular, and Integumentary Systems - Assessment - 32.3 Skin - The Integumentary System - Understand Key Concepts - Page 943: 22

Answer

c.

Work Step by Step

Option a. is incorrect. The dermis is the second layer of skin and lies just beneath the epidermis. Blood vessels, nerve endings, sensory receptors, glands, hair follicles, smooth muscle, and collagen lie within this layer. Option b. is incorrect. A strong, fibrous protein called keratin are made in older cells as they move to the top of the epidermal layer. Option d. is incorrect. Melanin is a dark brown pigment found in the epidermis. Option c. is correct. The epidermis is the outermost layer of the skin.
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