A client is experiencing muscle atrophy following 2 weeks in ...

[altibaby]

A client is experiencing muscle atrophy following 2 weeks in traction after a motor vehicle accident. Which of the following factors has most likely contributed to the atrophy of the client's muscle cells?
 
  A)
  High levels of insulin and IGF-1 in the client's blood during immobilization
  B)
  Denervation of the affected muscles during the time of traction
  C)
  A reduction of skeletal muscle use secondary to the traction treatment
  D)
  Reduced oxygen consumption and cellular function that ensures muscle cell survival

Question 2

Which of the following characteristics could apply to healthy somatic cells rather than cancerous cells?
 
  A)
  A high rate of mutation exists in the cells.
  B)
  The cells have a reduced tendency to cluster together.
  C)
  They remain viable and multiply without attachments to other cells and the extracellular matrix.
  D)
  The cells are unable to proliferate except by mitotic division.

[essyface1]

Answer to Question 1

Ans:
C

Feedback:

Disuse atrophy results from the reduction in skeletal muscle use such as that following encasement in plaster casts or traction. Low levels of insulin and IGF-1 contribute to atrophy, and denervation only occurs in paralyzed limbs. Reduced oxygen consumption and cellular function are the mechanisms of cell atrophy but not the causes of the process.

Answer to Question 2

Ans:
D

Feedback:

Mitotic division is the normal method of division that exists in the body. High rates of mutation, reduced adhesion, and loss of anchorage dependence are associated with cancer cells.

[altibaby]

Correct answers!

[essyface1]

Great! Please up vote