Which term describes the earliest erythroid precursors in embryonic development?

Study for the Hematology 1 Test. Utilize flashcards and multiple-choice questions with detailed explanations. Prepare effectively for success!

Multiple Choice

Which term describes the earliest erythroid precursors in embryonic development?

The earliest erythroid precursors in embryonic development are primitive erythroblasts. They arise in the yolk sac during primitive hematopoiesis and are nucleated red cell precursors that produce embryonic hemoglobins to supply the early embryo. As development continues, definitive erythropoiesis takes over in the fetal liver and later the bone marrow, generating enucleated erythrocytes that circulate. The other terms refer to different lineages or stages: a megakaryoblast is a precursor to platelets, a lymphoblast is a precursor of lymphoid cells, and an erythrocyte is the mature red blood cell.

The earliest erythroid precursors in embryonic development are primitive erythroblasts. They arise in the yolk sac during primitive hematopoiesis and are nucleated red cell precursors that produce embryonic hemoglobins to supply the early embryo. As development continues, definitive erythropoiesis takes over in the fetal liver and later the bone marrow, generating enucleated erythrocytes that circulate. The other terms refer to different lineages or stages: a megakaryoblast is a precursor to platelets, a lymphoblast is a precursor of lymphoid cells, and an erythrocyte is the mature red blood cell.

More practice questions