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HEMATOLOGY & COAGULATION EXAM QUESTIONS AND CORRECT
ANSWERS LATEST EDITION 2026
Hematology & Coagulation —Questions
Chapter 1: Hematopoiesis and Blood Cell Development
1. Where does hematopoiesis primarily occur in the adult?
A) Liver
B) Spleen
C) Bone marrow
D) Thymus
Answer: C
Rationale: In adults, hematopoiesis primarily occurs in the bone marrow, specifically the red
marrow of the pelvis, sternum, ribs, and vertebrae.
2. Where does hematopoiesis primarily occur in the fetus?
A) Liver and spleen
B) Bone marrow
C) Thymus
D) Lymph nodes
Answer: A
Rationale: Fetal hematopoiesis primarily occurs in the liver and spleen, transitioning to bone
marrow later in development.
3. What is the pluripotent stem cell?
A) A cell that can differentiate into all blood cell types
B) A mature red blood cell
C) A mature white blood cell
D) A platelet
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Answer: A
Rationale: The pluripotent stem cell (hemocytoblast) can differentiate into all blood cell
lineages.
4. Which growth factor stimulates red blood cell production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: C
Rationale: Erythropoietin, produced by the kidneys, stimulates red blood cell production.
5. Which growth factor stimulates platelet production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: D
Rationale: Thrombopoietin, produced by the liver, stimulates platelet production.
6. Which growth factor stimulates granulocyte production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: A
Rationale: G-CSF (granulocyte colony-stimulating factor) stimulates granulocyte production.
7. Which growth factor stimulates granulocyte and macrophage production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: B
Rationale: GM-CSF (granulocyte-macrophage colony-stimulating factor) stimulates granulocyte
and macrophage production.
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8. What is the first recognizable cell in the erythroid lineage?
A) Pronormoblast
B) Reticulocyte
C) Erythrocyte
D) Normoblast
Answer: A
Rationale: The pronormoblast (proerythroblast) is the first recognizable cell in the erythroid
lineage.
9. What is the last nucleated cell in the erythroid lineage?
A) Pronormoblast
B) Reticulocyte
C) Orthochromic normoblast
D) Erythrocyte
Answer: C
Rationale: The orthochromic normoblast is the last nucleated cell in the erythroid lineage
before the nucleus is extruded.
10. What is a reticulocyte?
A) An immature red blood cell without a nucleus
B) A mature red blood cell
C) A white blood cell
D) A platelet
Answer: A
Rationale: A reticulocyte is an immature red blood cell that has extruded its nucleus but still
contains residual RNA.
11. What is the normal reticulocyte count?
A) 0.5-1.5%
B) 2-5%
C) 5-10%
D) 10-15%
Answer: A
Rationale: The normal reticulocyte count is 0.5-1.5% of red blood cells.
12. What does an elevated reticulocyte count indicate?
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A) Increased red blood cell production
B) Decreased red blood cell production
C) Normal red blood cell production
D) Red blood cell destruction
Answer: A
Rationale: An elevated reticulocyte count indicates increased red blood cell production, often in
response to anemia.
13. What does a decreased reticulocyte count indicate?
A) Increased red blood cell production
B) Decreased red blood cell production
C) Normal red blood cell production
D) Red blood cell destruction
Answer: B
Rationale: A decreased reticulocyte count indicates decreased red blood cell production, often
due to bone marrow failure.
14. What is the first recognizable cell in the granulocytic lineage?
A) Myeloblast
B) Promyelocyte
C) Myelocyte
D) Metamyelocyte
Answer: A
Rationale: The myeloblast is the first recognizable cell in the granulocytic lineage.
15. What is the last cell in the granulocytic lineage that can divide?
A) Myeloblast
B) Promyelocyte
C) Myelocyte
D) Metamyelocyte
Answer: C
Rationale: The myelocyte is the last cell in the granulocytic lineage that can divide.
16. What is the first recognizable cell in the monocytic lineage?
A) Monoblast
B) Promonocyte
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HEMATOLOGY & COAGULATION EXAM QUESTIONS AND CORRECT
ANSWERS LATEST EDITION 2026
Hematology & Coagulation —Questions
Chapter 1: Hematopoiesis and Blood Cell Development
1. Where does hematopoiesis primarily occur in the adult?
A) Liver
B) Spleen
C) Bone marrow
D) Thymus
Answer: C
Rationale: In adults, hematopoiesis primarily occurs in the bone marrow, specifically the red
marrow of the pelvis, sternum, ribs, and vertebrae.
2. Where does hematopoiesis primarily occur in the fetus?
A) Liver and spleen
B) Bone marrow
C) Thymus
D) Lymph nodes
Answer: A
Rationale: Fetal hematopoiesis primarily occurs in the liver and spleen, transitioning to bone
marrow later in development.
3. What is the pluripotent stem cell?
A) A cell that can differentiate into all blood cell types
B) A mature red blood cell
C) A mature white blood cell
D) A platelet
1|Page
,Page 2 of 59
Answer: A
Rationale: The pluripotent stem cell (hemocytoblast) can differentiate into all blood cell
lineages.
4. Which growth factor stimulates red blood cell production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: C
Rationale: Erythropoietin, produced by the kidneys, stimulates red blood cell production.
5. Which growth factor stimulates platelet production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: D
Rationale: Thrombopoietin, produced by the liver, stimulates platelet production.
6. Which growth factor stimulates granulocyte production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: A
Rationale: G-CSF (granulocyte colony-stimulating factor) stimulates granulocyte production.
7. Which growth factor stimulates granulocyte and macrophage production?
A) G-CSF
B) GM-CSF
C) Erythropoietin
D) Thrombopoietin
Answer: B
Rationale: GM-CSF (granulocyte-macrophage colony-stimulating factor) stimulates granulocyte
and macrophage production.
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,Page 3 of 59
8. What is the first recognizable cell in the erythroid lineage?
A) Pronormoblast
B) Reticulocyte
C) Erythrocyte
D) Normoblast
Answer: A
Rationale: The pronormoblast (proerythroblast) is the first recognizable cell in the erythroid
lineage.
9. What is the last nucleated cell in the erythroid lineage?
A) Pronormoblast
B) Reticulocyte
C) Orthochromic normoblast
D) Erythrocyte
Answer: C
Rationale: The orthochromic normoblast is the last nucleated cell in the erythroid lineage
before the nucleus is extruded.
10. What is a reticulocyte?
A) An immature red blood cell without a nucleus
B) A mature red blood cell
C) A white blood cell
D) A platelet
Answer: A
Rationale: A reticulocyte is an immature red blood cell that has extruded its nucleus but still
contains residual RNA.
11. What is the normal reticulocyte count?
A) 0.5-1.5%
B) 2-5%
C) 5-10%
D) 10-15%
Answer: A
Rationale: The normal reticulocyte count is 0.5-1.5% of red blood cells.
12. What does an elevated reticulocyte count indicate?
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A) Increased red blood cell production
B) Decreased red blood cell production
C) Normal red blood cell production
D) Red blood cell destruction
Answer: A
Rationale: An elevated reticulocyte count indicates increased red blood cell production, often in
response to anemia.
13. What does a decreased reticulocyte count indicate?
A) Increased red blood cell production
B) Decreased red blood cell production
C) Normal red blood cell production
D) Red blood cell destruction
Answer: B
Rationale: A decreased reticulocyte count indicates decreased red blood cell production, often
due to bone marrow failure.
14. What is the first recognizable cell in the granulocytic lineage?
A) Myeloblast
B) Promyelocyte
C) Myelocyte
D) Metamyelocyte
Answer: A
Rationale: The myeloblast is the first recognizable cell in the granulocytic lineage.
15. What is the last cell in the granulocytic lineage that can divide?
A) Myeloblast
B) Promyelocyte
C) Myelocyte
D) Metamyelocyte
Answer: C
Rationale: The myelocyte is the last cell in the granulocytic lineage that can divide.
16. What is the first recognizable cell in the monocytic lineage?
A) Monoblast
B) Promonocyte
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