Anatomy & Physiology: The Unity of Form and Function, 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073403717
ISBN 13: 978-0-07340-371-7

Chapter 6 - Section 6.2 - Hair and Nails - Before You Go On - Page 190: 9

Answer

Anagen- stem cells from the bulge in the follicle multiply and travel downward, pushing the dermal papilla deeper into the skin and forming the epithelial root sheath. Catagen- mitosis in the hair matrix ceases and sheath cell below the bulge die. Telogen- papilla reaches the bulge the hair goes into a resting phase.

Work Step by Step

186 Hair Growth and Loss
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