مراحل تكوين خلايا الدم الحمراء

[خيشة حنان]

أبي ملخص بسيط ومفهوم عن تكون خلاي الدم الحمراء RBC

[HIV]

http://dtc.pima.edu/~biology/202alpha/lesson1/bloodstemcells.jpg

Erythropoiesis is the process by which red blood cells (erythrocytes) are produced. In human adults, this usually occurs within the bone marrow; in humans with certain diseases, in fetuses and in some animals, erythropoeiesis also occurs outside the bone marrow, within the spleen, liver, or yolk sac. This is termed extramedullary erythropoiesis.

The tibia and femur cease to be important sites of hematopoiesis by about age 25; the vertebrae, sternum, and ribs continue to produce red blood cells throughout life.


Erythrocyte differentiation
In the process of red blood cell maturation, a cell undergoes a series of differentiations. The following stages of development all occur within the bone marrow:

1-pluripotent hematopoietic stem cell
2-multipotent stem cell
3-unipotential stem cell
4-pronormoblast
5-basophilic normoblast/early normoblast
6-polychromatophilic normoblast/intermediate normoblast
7-orthochromatic normoblast/late normoblast
8-reticulocyte

After these stages, the cell is released from the bone marrow, and ultimately becomes an "erythrocyte" or mature red blood cell circulating in the peripheral blood.

These stages correspond to specific appearances of the cell when stained with Wright's stain and examined by light microscopy, but correspond to other biochemical changes.

In the process of maturation a basophilic pronormoblast is converted from a cell with a large nucleus and a volume of 900 µm3 to an enucleated disc with a volume of 95 µm3.

u can read more in this site
http://en.wikipedia.org/wiki/Erythropoiesis

[رائد فرزان]

ممكن تضيف الصورة الرائعة للاطلس :)

[راعي ميكروبات]

أنا أقول نضيف HIV كله للأطلس لأنه مبدع :sm188:

[HIV]

ممكن تضيف الصورة الرائعة للاطلس

من عيوني

أنا أقول نضيف HIV كله للأطلس لأنه مبدع

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[ممرض]

ما شاء اللله

معلومات مفيدة وماقصرت HIV

[samchah]

معلومااات ولا اروووع ..
والصوره فن .. جدن واضحه..
تسلم خوي HIV ..

[حروف]

أهلين و سهلين ممكن أضيف هذي الصوره يا حلوين

http://www.cksu.com/vb/uploaded/6488_1174764997.gif

[اكاديمي مختبر]

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