1.6 hematopoiesis

exam 1

what is hematopoiesis?

formation of blood cells

what is erythropoiesis?

formation of erythrocytes

what is leukopoiesis?

formation of leukocytes

what is thrombopoiesis?

formation of platelets

where do formed elements come from?

one original cell - hematopoietic stem cell

what are the two classifications of hematopoietic stem cell?

myeloid stem cell or lymphoid stem cell

what is the pathway for erythropoiesis?

1. hematopoietic stem cell

2. myeloid stem cell

3. erythrocyte

what are hematopoietic stem cells AKA?

hemocytoblast

what is the pathway for thrombopoiesis?

1. hematopoietic stem cell

2. myeloid stem cell

3. platelet

what is the pathway for leukopoiesis?

1. hematopoietic stem cell

2. myeloid stem cell OR lymphoid stem cell

   1. myeloid stem cell

      1. neutrophil, eosinophil, or basophil

      2. monocyte

   2. lymphoid stem cell

      1. lymphocyte

what is leukemia?

blood cancer - overproduction of leukocytes

what is lymphoid leukemia?

overproduction of lymphocytes

what is myeloid leukemia?

overproduction of any non lymphocyte cell (neutrophil, eosinophil, basophil, monocyte, RBC, platelet)