My best friend hasn't cam to school since last week and I try to call her but she nvermind picks up I come to her house she's not home where is she Im really worried and my teachers bday is soon and I don't know what to give her oh dear here comes my mum to take me shopping for my teachers present.
Erythropoiesis (from Greek 'erythro' meaning red and 'poiesis' meaning to make) is the process which produces red blood cells (erythrocytes). It is stimulated by decreased O 2 in circulation, which is detected by the kidneys, which then secrete the hormone erythropoietin.
Erythropoietin (EPO) is a hormone that prevents anemia (low blood count) by helping you make red blood cells. Anemia causes fatigue and low energy levels. It occurs when there are not enough red blood cells to carry oxygen from the lungs to supply all the body's needs.