ANATOMY+PHYSIOLOGY
ANATOMY+PHYSIOLOGY
4th Edition
ISBN: 9781260265217
Author: McKinley
Publisher: RENT MCG
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Chapter 6, Problem 8DYKB

_____ 8. The cells in a hair follicle that are responsible for forming hair are the

  1. a. hair papilla cells.
  2. b. matrix cells.
  3. c. medullary cells.
  4. d. cortex cells.
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The cells in a hair follicle that are responsible for forming hair are the a. hair papilla cells. b. matrix cells. c. medullary cells. d. cortex cells.
Concerning hair growth,a. hair falls out of the hair follicle at the end of the growth stage.b. most of the hair on the body grows continuously.c. cutting or plucking the hair increases its growth rate and thickness.d. genetic factors and the hormone testosterone are involved in “patternbaldness.”e. eyebrows have a longer growth stage and resting stage thanscalp hair.
Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________ a.maintain the appropriate pH in order for the melanocyte to synthesize melanin granules. b.provide the melanocyte with nutrients necessary for melanin synthesis. c.maintain the appropriate temperature so the product of the melanocyte will not denature. d.accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer.

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ANATOMY+PHYSIOLOGY

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