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1
The formed elements of blood include all of the following except
A)red blood cells
B)white blood cells
C)platelets
D)plasma
2
The structure of red blood cells is that of
A)discs that are convex on one side and concave on the other
B)irregularly shaped fragments without a nucleus
C)relatively large cells with multiple nuclei
D)biconcave discs with no nucleus that increases surface area
3
Which of the following conditions would result in a low hematocrit?
A)dehydration
B)severe bleeding
C)increased production of erythrocytes by the kidneys
D)high levels of erythropoietin
4
Damaged red blood cells are destroyed by cells called
A)leukocytes
B)macrophages
C)neutrophils
D)granulocytes
5
The heme portion of damaged red blood cells is decomposed first into iron and
A)biliverdin
B)bilirubin
C)bile
D)copper
6
Erythropoietin is released by the kidney in direct response to
A)a decrease in the number of red blood cells
B)an increase in circulating biliverdin
C)stimuli originating in the lungs
D)a decrease in oxygen concentration in the blood
7
In an adult, red blood cells are produced in
A)the spleen
B)red marrow
C)the liver
D)yellow marrow
8
The production of red blood cells is dependent on adequate intake of
A)iron, folic acid, and vitamin B1
B)copper, vitamin K, and vitamin B12
C)iron, folic acid, and vitamin B12
D)zinc, vitamin K, and vitamin B1
9
The white cell below that is not a granulocyte is a
A)lymphocyte
B)eosinophil
C)neutrophil
D)basophil
10
The most numerous white blood cell is the
A)neutrophil
B)eosinophil
C)monocyte
D)lymphocyte





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