Session 3

Question 1

Which of the following growth factors promote red blood cell production?
a. Interleukin-1
b. TNF-alpha
c. G-CSF
Correct response
d. Erythropoietin

Answer 1

Erythropoietin

Question 2

One of the primary functions of the erythrocyte is gas exchange. Which part of the red blood cell carries oxygen?
a. Erythrocyte membrane
b. Erythrocyte nucleus
c. Haptoglobin
d. Hemoglobin

Answer 2

Hemoglobin

Question 3

Your patient is anemic; the following changes are seen on the CBC and blood film:
MCV is high
MCHC is low
The absolute reticulocyte count is above reference interval.
Many polychromatophilic cells are noted on the blood film.
What is the correct characterization of the anemia?

Answer 3

Macrocytic, hypochromic regenerative anemia

Question 4

How much of erythrocyte mass is replaced daily?
a. 1%
b. 5%
c. 10%
d. 50%

Answer 4

1%

Question 5

What stain do you use to definitively identify reticulocytes?
a. Papanicolaou stain
b. Diff Quik stain
c. Wright Giemsa stain
Correct response
d. New Methylene Blue

Answer 5

New Methylene Blue

Question 6

What value on the CBC is used to definitively indicate a regenerative response? Choose the best answer.
a. Hematocrit
b. Mean cell volume
c. Reticulocyte count
d. Mean cell hemoglobin concentration

Answer 6

Reticulocyte count

Question 7

Which species’ erythrocytes have the most prominent central pallor?
a. Horses
b. Cattle
c. Llamas
d. Dogs

Answer 7

Dogs

Question 8

Which species does not release reticulocytes into circulation under any circumstances?
a. Cats
b. Cows
c. Horses
d. Goats

Answer 8

Horses

Question 9

Which red blood cell breakdown product is processed by the liver, stored in the gall bladder, and then eliminated in the small intestine?
a. Amino acids
b. Erythropoietin
c. Bilirubin
d. Iron

Answer 9

Bilirubin