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Chapter 19, Problem 1MC

The epidermis ____.

  1. a. has an intricate network of blood vessels
  2. b. consists of layers of loosely packed cells
  3. c. contains a waterproofing protein
  4. d. has a thin layer of fat cells
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1. A) A major function of the skin is protection from ______.   A. abrasion   B. ultraviolet light   C. entry of a microorganism   D. dehydration   E. All of the above B) What is one important function of melanin?   A. Resets the diurnal biological clock   B. Increases the amount of blood vessels   C. Causes the skin to become cooler   D. Absorbs harmful radiation   E. Strengthens the skin or eyes C) Most of the cells of the epidermis are ________________.   A. fibroblasts   B. keratinocytes   C. macrophages   D. Langerhans cells D) The epidermis is nourished by diffusion from capillaries in the ___________.   A. papillary layer of the dermis   B. hypodermis   C. epidermis   D. reticular layer of the dermis E) Cell division occurs in which layer of the epidermis?   A. Stratum lucidum   B. Stratum corneum   C. Stratum basale   D. Stratum granulosum F) Which of the following is NOT…
The accumulation of dead keratinocytes and the protein ____ on the skin surface forms a waterproof barrier. Choose one: A.keratin B.oil C.melanin D.collagen
As individuals age, the number of collagen fibers that are found in the dermis of the skin decreases. What are the results of decreased collagen fibers in the dermis? Select all that apply. A The skin loses firmness and becomes wrinkled B The skin develops necrosis and slowly begins to die. C The inflammation levels in the skin increase drastically. The wound healing process in the skin is slower.

Chapter 19 Solutions

Microbiology with Diseases by Body System & Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System Package

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