production of red blood cells

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reticulocyte

a cell that has ejected it's nucleus

proerythroblast during production of RBC

ejects it's nucleus to make room for more hemoglobin

steps to producing a red blood cell

hemocytoblast, proerythroblast, reticulocyte, erythrocyte

reticulocyte during production of RBC

more hemoglobin is produced, cell flattens and erythrocyte is formed.

proerythroblast

nucleate, filled with hemoglobin

erythropoiesis

production of new red blood cells

hemocytoblast during production of RBC

begins making ribosomes, ribosomes make lots of hemoglobin

Erythropoietin is released by

the kidneys - 90% the liver - 10% and whenever O2 content of the blood decreases

How is erythropoiesis stimulated?

when a hemocytoblast binds to the hormone erythropoietin.


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