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Questions and Answers
The progression of fatty replacement throughout the long bones results in an increase in erythropoietic function.
The progression of fatty replacement throughout the long bones results in an increase in erythropoietic function.
False (B)
Red marrow converts to yellow bone marrow due to an increase in haematopoietic function.
Red marrow converts to yellow bone marrow due to an increase in haematopoietic function.
False (B)
During the first few weeks of gestation, haematopoiesis occurs mainly in the liver and spleen.
During the first few weeks of gestation, haematopoiesis occurs mainly in the liver and spleen.
False (B)
In adults, the primary site of haematopoiesis shifts from the liver and spleen to the bone marrow.
In adults, the primary site of haematopoiesis shifts from the liver and spleen to the bone marrow.
Adult bone marrow typically displays a higher percentage of fat cells compared to haematopoietic cells.
Adult bone marrow typically displays a higher percentage of fat cells compared to haematopoietic cells.
Erythrocytes, granulocytes, and platelets are produced in yellow bone marrow.
Erythrocytes, granulocytes, and platelets are produced in yellow bone marrow.
Neutrophils are formed from myeloid stem cells.
Neutrophils are formed from myeloid stem cells.
B-lymphocytes arise from myeloid stem cells in the bone marrow.
B-lymphocytes arise from myeloid stem cells in the bone marrow.
Hematopoiesis in adults mainly occurs in the liver.
Hematopoiesis in adults mainly occurs in the liver.
Monocytes differentiate into lymphocytes during hematopoiesis.
Monocytes differentiate into lymphocytes during hematopoiesis.
Stromal cells within the bone marrow provide a suitable environment for hematopoietic development.
Stromal cells within the bone marrow provide a suitable environment for hematopoietic development.
Primitive erythroblasts move from the liver to yolk sac during the hepatic stage of haematopoiesis in fetus.
Primitive erythroblasts move from the liver to yolk sac during the hepatic stage of haematopoiesis in fetus.
Fetal Hb produced during the medullary bone marrow stage is coded by the genes α2δ2.
Fetal Hb produced during the medullary bone marrow stage is coded by the genes α2δ2.
Adults have haematopoiesis occurring in all bones with red bone marrow, including membranous bones.
Adults have haematopoiesis occurring in all bones with red bone marrow, including membranous bones.
In infants, haematopoiesis occurs only in long bones and excludes flat bones.
In infants, haematopoiesis occurs only in long bones and excludes flat bones.
Hb Portland 1 is produced during the extraembryonic stage of haematopoiesis in fetus.
Hb Portland 1 is produced during the extraembryonic stage of haematopoiesis in fetus.
During the mesoblastic stage, central cells of blood islands give rise to primitive erythroblasts.
During the mesoblastic stage, central cells of blood islands give rise to primitive erythroblasts.
