Hema lec Flashcards
Process of the blood cell production
Hematopoiesis
Can proliferate and give rise to any of the functional blood cell lineages
Hematopoietic stem cell
Characterized by selective distribution of embryonic stem cells
Hematopoiesis in human
During fetal development hematopoiesus begins
Yolk sac
After yolk sac Hematopoiesis later progress to
Aorta gorand mesonephros region
First phase of Hematopoiesis
Mesoblastic phase
Second phase of Hematopoiesis
Hepatic phase
Third phase of Hematopoiesis
Medullary phase
Mesoblastic starts at day
19th day of fertilization
Relocation site of progenitor cells of mesenchymal origin
Yolk sac
True or false. Progenitor cells of mesenchymal origin relocate to the yolk sac
True
True or false. The stated above give rise to hematopoitic cell
True
Erythroblasts come from mesodermal cells lining the
Yolk sac
From stated above, remaining cells surrounding the cavity develop into
Angioblast
Hematopoiesis in the yolk sac occurs
Intavascularlt
Difference of primitive erythroblast from later erythroblasts
PE never lose their nucleus
These are found in the blood islands surrounding a macrophage
Primitive erythroblast
The macrophages started above is called
Nurse cell
In mesoblastic phase these produces hgb
Primitive erythroblast