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Which hematological cancer affects plasma cells in the bone marrow?
A) Lymphoma
B) Myeloma
C) Leukemia
D) Hemophilia - ✅✅Answer: B) Myeloma
Rationale: Myeloma is characterized by cancerous growth of plasma cells in the
bone marrow.
What stimulates the production of red blood cells in response to hypoxia?
A) Interferon
B) Thrombopoietin
C) Erythropoietin
D) Cortisol - ✅✅Answer: C) Erythropoietin
,Rationale: Erythropoietin, primarily produced by the kidneys, stimulates RBC
production during hypoxia.
What term describes the process of blood cell development?
A) Erythropoiesis
B) Hemostasis
C) Hematopoiesis
D) Angiogenesis - ✅✅Answer: C) Hematopoiesis
Rationale: Hematopoiesis is the process by which hematopoietic stem cells
differentiate into various blood cell types.
Which coagulation test evaluates the extrinsic pathway of clotting?
A) aPTT
B) D-dimer
C) Prothrombin time (PT)
D) Fibrinogen levels - ✅✅Answer: C) Prothrombin time (PT)
Rationale: PT measures the clotting ability of the extrinsic pathway and is used to
monitor anticoagulation therapy.
,Which hematological disorder is characterized by low platelet count?
A) Anemia
B) Thrombocytopenia
C) Hemophilia
D) Leukemia - ✅✅Answer: B) Thrombocytopenia
Rationale: Thrombocytopenia is a condition where the platelet count is reduced,
leading to increased bleeding risk.
Which factor primarily triggers the production of red blood cells (RBCs)?
A) Increased iron levels
B) High oxygen levels in the blood
C) Low oxygen delivery to tissues
D) Dehydration - ✅✅Correct Answer: C) Low oxygen delivery to tissues
Rationale: Decreased oxygen delivery, such as in anemia or hypoxemia, stimulates
the release of erythropoietin from the kidneys, triggering RBC production.
What is the role of erythropoietin in erythropoiesis?
A) Inhibits RBC production
B) Stimulates RBC production
, C) Breaks down old RBCs
D) Converts hemoglobin to iron - ✅✅Correct Answer: B) Stimulates RBC
production
Rationale: Erythropoietin, primarily released by the kidneys in response to
hypoxia, promotes RBC production in the bone marrow.
Which condition can lead to increased erythropoiesis as a compensatory
mechanism?
A) Hypervolemia
B) Pulmonary disease
C) High blood pressure
D) Hyperglycemia - ✅✅Answer: B) Pulmonary disease
Rationale:
Chronic pulmonary diseases impair gas exchange, leading to hypoxemia, which
stimulates erythropoietin release and RBC production.
What is the main function of hemoglobin in RBCs?
A) Store nutrients
B) Transport oxygen