Erythropoiesis

1754
0

Erythropoiesis is the process by which red blood cells (erythrocytes) are produced. It is stimulated by decreased O2 delivery to the kidneys, which then secrete the hormone erythropoietin. This activates increased erythropoiesis in the hemopoietic tissues. In postnatal birds and mammals (including humans), this usually occurs within the red bone marrow. In the early fetus, erythropoiesis takes place in the mesodermal cells of the yolk sac. By the third or fourth month, erythropoiesis moves to the spleen and liver. After seven months, erythropoiesis occurs in the bone marrow. However, in humans with certain diseases and in some animals, erythropoiesis also occurs outside the bone marrow, within the spleen or liver. This is termed extramedullary erythropoiesis.

by neeha



26-Jul-10, 10:25 am

Please leave a comment on Erythropoiesis

user

Drake Bell

6-Jun-07, 12:00 am
1761 Views

Veil

18-Jun-10, 6:32 am
162 Views

Louis van Gaal

8-May-14, 10:57 am
31 Views

Pericles

30-Apr-10, 11:26 am
764 Views

Renegade

9-Jul-10, 9:43 am
207 Views

Brian Setzer

7-Jul-10, 8:16 am
2456 Views

Britney Spears ..

3-Sep-11, 12:03 pm
1922 Views

EMI

11-May-10, 7:47 am
217 Views

Fruits Basket

26-Apr-10, 1:34 pm
197 Views

Saddam Death Ph..

31-Dec-06, 12:00 am
34065 Views
Top