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→Development
==Development==
==Development==
[[Erythrocytes|Erythrocyte]] development is divided into several stages and at each stage the cell will divide several times. As [[Bone Marrow - Anatomy & Physiology|bone marrow]] does not act as storage, all erythrocytes produced are immediately released into the circulation.
[[Erythrocytes|Erythrocyte]] development is divided into several stages and at each stage the cell will divide several times. As [[Bone Marrow - Anatomy & Physiology|bone marrow]] does not act as storage, all erythrocytes produced are immediately released into the circulation.
[[Image:LH Developing Erythrocyte Histology.jpg|right|thumb|100px|'''Developing erythrocytes''' ©RVC 2008]]
[[Image:LH Developing Erythrocyte Histology.jpg|right|thumb|150px|'''Developing erythrocytes''' ©RVC 2008]]
===Stem cell ===
===Stem cell ===
===Stages===
===Stages===
[[Image:Erythropoiesis pathway.jpg|right|thumb|100px|'''Erythropoiesis pathway''']]
[[Image:Erythropoiesis pathway.jpg|right|thumb|150px|'''Erythropoiesis pathway''']]
====Proerythroblast====
====Proerythroblast====
The first [[Erythrocytes|erythrocyte]] precursor produced directly from the [[Haematopoiesis - Overview#Colony Forming Units|CFU-GEMM]] under the influence of erythropoietin. It has a large nucleus with free ribosomes in the cytoplasm giving the cytoplasm a basophilic appearance.
The first [[Erythrocytes|erythrocyte]] precursor produced directly from the [[Haematopoiesis - Overview#Colony Forming Units|CFU-GEMM]] under the influence of erythropoietin. It has a large nucleus with free ribosomes in the cytoplasm giving the cytoplasm a basophilic appearance.