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Author Question: Which of the following statements best conveys an aspect of the process of keratinization? A) ... (Read 184 times)

leilurhhh

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Which of the following statements best conveys an aspect of the process of keratinization?
 
  A)
  Keratin cells synthesized in the dermis migrate to the surface over 20 to 30 days.
  B)
  Mitosis that begins with the cells of the stratum granulosum results in a continual supply of new keratinocytes.
  C)
  The stratum germinativum continuously produces new keratinocytes to replace losses.
  D)
  The basal cells of the epidermis migrate to the skin surface at a rate that matches superficial losses of skin cells.

Question 2

A female toddler has been diagnosed with toeing-in (metatarsus adductus). What teaching should the pediatrician provide to the parents of the child about her diagnosis?
 
  A)
  She will likely walk later than most children, but it will resolve itself with time.
  B)
  We'll likely need to start putting the first of a series of casts on her legs quite soon.
  C)
  The best time to perform the surgery that's needed will be at age 3 or 4.
  D)
  While there's no effective treatment for her toeing-in, most children learn to accommodate the problem and walk independently.



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jojobee318

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Answer to Question 1

Ans:
C

Feedback:

The stratum germinativum, or stratum basale, consists of a single layer of basal cells that are attached to the basal lamina. The basal cells, which are columnar, undergo mitosis to produce new keratinocytes that move toward the skin surface to replace cells lost during normal skin shedding. Keratinization does not originate in the dermis or stratum granulosum, and the basal cells of the epidermis do not migrate to the surface.

Answer to Question 2

Ans:
B

Feedback:

Toeing-in, regardless of staging, requires some form of intervention, most commonly braces or casts. Treatment is not noted to include surgery, and spontaneous resolution is not common.





 

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