Blood Formed Elements Flashcards
The process of blood formation is known as?
Haemopoiesis
In the embryo, haemopoiesis occurs in the_____ and later in the _____, _____, and ______
Yolk sac
Liver
Spleen
Lymph nodes
After birth, haemopoiesis occurs in the _______ of different bones
Red marrow
Haemopoietic stem cells are called?
Pluripotential haemopoietic
Haemopoietic stem cells are found in the _______ and give rise to all the blood cells of the body except lymphocytes
Red bone marrow
Lymphocytes are formed mainly in?
lymphoid tissues
The result of simultaneous, continuous proliferation and differentiation of cells derived from stem cells whose potentials are reduced as differentiation progresses is called?
Haemopoiesis or Haematopoiesis
Large precursor cells of erythrocytes succeeded by early erythroblasts are called?
Proerythroblasts(1st stage)
In formation of erythrocytes, slightly smaller cells that contain basophilic cytoplasm and no haemoglobin are called?
Early/basophilic erythroblasts(2nd stage)
In formation of erythrocytes, cells that some haemoglobin, eosinophilic and basophilic cytoplasmic areas are called?
Intermediate/polychromatic erythroblasts(3rd stage)
In formation of erythrocytes, cells that contain more haemoglobin and acidophilic cytoplasm are called?
Final/acidophilic erythroblasts(4th stage)
In formation of erythrocytes, cells that have a reticular appearance in cytoplasm produced by RNA remaining in it are called?
Reticulocytes(5th stage)
In formation of erythrocytes, cells that lose their reticulum and mature are called?
Erythrocytes(6th stage)
Precursor cells of blood platelets are called?
Megakaryoblasts(1st stage)
In formation of platelets, cells that arise from enlargement of megakaryoblasts are called?
Promegakaryocytes(2nd stage)
In platelets formation, cells that arise from enlargement of Promegakaryocytes are called?
Megakaryocytes(50-100 micrometer with multi-lobed nucleus)[3rd stage]
In platelets formation, cells formed by separation of small masses of cytoplasm from megakaryocytes are called?
Platelets(4th/final stage)
Precursor of neutrophil, Eosinophil and basophil is?
Myeloblast(1st stage)
In granulocytes formation, larger matured myeloblast marked by the presence of lysosomes(large granules) in its cytoplasm is called?
Promyelocyte(basophilic cytoplasm)[2nd stage]
In granulocytes formation, cells that arise from promyelocyte with smaller and specific granules are called?
Myelocyte(enables recognition of neutrophil, Eosinophil & basophil)[3rd stage]
An intermediate stage for granulocytes before maturation in which the nucleus is elongated but not yet polymorphic is called?
Band stage
The early stage in the formation of Monocytes is called?
Monoblasts(1st stage)
In monocytes formation, the next stage after monoblasts is called?
Promonocytes (2nd stage)
The third stage in formation of Monocytes is?
Monocytes
Monocytes mature into?
Macrophages
Precursor cells of lymphocytes are called?
Lymphoblasts(large cells capable of dividing 2 or 3 times to form lymphocytes)[1st stage]
The second stage of lymphocytes formation is called?
Prolymphocyte
The third stage of lymphocytes formation is called?
Large lymphocyte
The large lymphocyte divides into?
Pre-B cells and Prothymocyte
Pre-B cells differentiate into?
B lymphoblast
Prothymocyte differentiate into?
T lymphoblast
B lymphoblast and T lymphoblast differentiate into_______ & ________ respectively?
B lymphocyte & T lymphocyte
B lymphocyte differentiates into?
Plasma cell
