Exam Quiz -Histology of Blood test-2

Instructions: For each histology question, pick the one best answer. This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1). Click here for answers and detailed explanations.

1.
Approximately what percentage of the volume of blood do the formed elements comprise?
a. 5
b. 25
c. 45
d. 75
e. 90

2.
Which of the following is the most abundant in a peripheral smear of blood?
a. Neutrophils
b. Basophils
c. Erythrocytes
d. Leukocytes
e. Platelets

3. Which leukocyte is the least abundant in a peripheral smear of blood? a. Lymphocytes b. Basophils c. Neutrophil d. Monocytes e. Eosinophils

4.
Which of the following is not a granulocyte?
a. PMN
b. Basophils
c. Neutrophil
d. Monocytes
e. Eosinophils

5.
Which of the following is a granulocyte?
a. Thrombocyte
b. Monocyte
c. Lymphocyte
d. Basophil
e. Erythrocyte

6.
Which of the following is described as having a "central pallor"?
a. Leukocytes
b. Monocytes
c. Eosinophils
d. Platelets
e. Erythrocytes

7. Which is the smallest leukocyte? a. Neutrophil b. Lymphocytes c. Monocytes d. Eosinophil e. Basophils

8.
Which leukocyte usually has a bi-lobed nucleus?
a. Neutrophil
b. Lymphocytes
c. Monocytes
d. Eosinophil
e. Basophils

9.
What is the buffy coat?
a. Leukocytes
b. Platelets
c. Erythrocytes
d. Plasma
e. Both a and b

10. What is another term for a platelet? a. Thrombocyte b. Monocyte c. Lymphocyte d. Basophil e. Erythrocyte

Click here for answers and detailed explanations.