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Author Question: Which shape of red cell is described as a round, dense cell with no area of central pallor? a. ... (Read 288 times)

kodithompson

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on: Jun 25, 2018
Which shape of red cell is described as a round, dense cell with no area of central pallor?
 
  a. Sickle cell
  b. Target cell
  c. Burr cell
  d. Spherocyte

Question 2

All of the following are physiologic adaptations the body makes when a slow drop in the number of red cells occurs except:
 
  a. Erythropoietin level increases.
  b. Oxygen dissociation curve shifts to left.
  c. Cardiac output increases.
  d. Respiratory rate increases.


mirabriestensky

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

ANS: D
This description fits that of a spherocyte. The MCV of a spherocyte is usually normal, although microspherocytes exist that have a low MCV.

Answer to Question 2

ANS: B
When anemia develops, the concentration of 2,3-biphosphoglycerate (2,3-BPG) increases. This causes a shift to the right in the oxygen dissociation curve, which results in more effective delivery of oxygen to tissue (oxygen affinity of hemoglobin decreases).


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