Hematopoiesis and Cardiovascular System Quiz
Test your knowledge on the processes and components of hematopoiesis within the cardiovascular system.
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Quiz Questions & Answers
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Question 1: Which hematopoietic stem cell marker is MOST specific for identifying pluripotent stem cells in human bone marrow?
CD34+ CD38-
CD34+ CD38+
CD19+ CD20+
CD13+ CD33+
Question 2: In the bone marrow microenvironment, which stromal cell type secretes SCF (stem cell factor) essential for HSC maintenance?
Osteoblasts
Endothelial cells
Adipocytes
Reticular cells
Question 3: Which transcription factor is CRITICAL for commitment of multipotent progenitors to the erythroid lineage?
PU.1
GATA-1
C/EBPα
Pax-5
Question 4: During hematopoiesis, the BFU-E (burst-forming unit-erythroid) is distinguished from CFU-E by:
Responsiveness to erythropoietin
Formation of large erythroid bursts in culture
Expression of hemoglobin
Ability to form granulocytes
Question 5: Which growth factor is produced by T-lymphocytes and stimulates multipotent progenitors?
Erythropoietin
Interleukin-3
Thrombopoietin
Stem cell factor
Question 6: In aplastic anemia, bone marrow biopsy typically shows:
Hypercellular marrow with dysplastic megakaryocytes
Hypocellular marrow with fatty replacement
Increased iron stores with ringed sideroblasts
Fibrosis with teardrop cells
Question 7: What is the normal lifespan of a circulating erythrocyte?
30 days
60 days
120 days
180 days
Question 8: Which morphological feature is characteristic of a proerythroblast?
Condensed nucleus
Abundant pink cytoplasm
Large nucleus with nucleoli
Absence of basophilia