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Author Question: The primary function of platelets is to: a. Defend the body against bacterial invasion. b. ... (Read 74 times)

stephzh

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on: Jun 25, 2018
The primary function of platelets is to:
 
  a. Defend the body against bacterial invasion.
  b. Carry oxygen to tissues.
  c. Facilitate blood clotting.
  d. Regulate acid-base balance.

Question 2

Which laboratory specimens must be treated with standard (universal) precautions?
 
  a. Only those labeled with a biohazard sticker
  b. Only those from patients known to have human immunodeficiency virus (HIV) or hepatitis
  c. All human blood and body fluids
  d. All specimens submitted for bacterial culture


jazzlynnnnn

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: C
Whenever disruption occurs to a blood vessel so that bleeding results, platelets respond initially to stop the bleeding in small vessels; they also play an integral role in facilitating the formation of a blood clot. White cells defend against bacterial invasion; red cells (i.e., hemoglobin) carry oxygen to tissues; and a complex interaction of plasma electrolytes, proteins, and carbon dioxide participates in acid-base balance.

Answer to Question 2

ANS: C
All human specimens, whether they are blood, urine, any body fluid, or a specimen submitted for culture, should be treated identically using universal standard precautions. Even a patient who professes to feel well can harbor an infectious agent that has the potential for transmission.


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