Lect 1 (part 2) Flashcards
What type of cell is this?
Basophil granulocytes
Size and life span of basophil granulocytes
- size (diameter) : 10-14 μm
- life span: 3-10 days
Basophil granulocytes have large granules stained with basic dyes contain____ (3)
heparin, histamine, slow reacting substance (SRS)
5 functions of basophil granulocytes
- inflammatory reactions (allergic symptoms)
- prevention of blood clotting too quickly (heparin, SRS)
- vasodilatation (histamine)
- release of vasoactive agents
- receptor for IgE
What type of cell is this?
Basophil granulocytes
Name of these cells
Lymphocytes
Name of this cell
Large granular lymphocte
Identify
1/ T lymphocyte
2/ B lymphocyte
3/ Plasma cell
Function of T lymphocyte
cell mediated immunity
2 functions of B lymphocyte
humoral immune response, Ig production (differentiate into plasma cell)
Function of Natural killer (1-3%)
killing infected or tumor cells by causing them to lyse (perforin)
T LYMPHOCYTE
-> What are the Sites of Development, maturation and activation?
bone marrow, thymus, lymphatic organs (T dependent area)
B LYMPHOCYTE
-> What are the Sites of Development, maturation and activation?
bone marrow, lymphatic organs (B dependent area)
Activation of lymphocytes
Identify
B lymphocyte
Identify
Plasma cell
Plasma cell is a derivative of ___
B lymphocytes
Formation of blood cells (hemopoiesis)
-> 3 phases of Intrauterine – fetal hemopoiesis?
- First or prehepatic phase – blood islands in the wall of yolk sac
- Second or hepatosplenothymic phase – move to liver and lymphatic tissues
- Third or medullolymphatic phase – bone marrow and lymphatic tissues
Formation of blood cells (hemopoiesis)
-> Adult hemopoiesis
-> What happen during Myelopoiesis - bone marrow?
- Erythropoiesis
- Granulocytopoiesis
- Monocytopoiesis
- Thrombocytopoiesis
Formation of blood cells (hemopoiesis)
-> Adult hemopoiesis
-> Sites of Lymphopoiesis?
bone marrow, lymphatic tissues
9 locations of Location of red bone marrow
- Carticular cartilage
- spongy bone
- compact bone
4. medullary/marrow canal - yellow bone marrow
- periosteum
- proximal epiphysis of long bones (femur, humerus)
- diaphysis
- distal epiphysis
There is a conversion of ___ to ___ marrow
Red to yellow
Which flat bones that you can find red bone marrow?
hip bone, sternum, skull, ribs, vertebrae
Identify 1 - 3
- Adipose cell
- Adventitial cell
- Arterial capillary
Identify 1 - 3
- Hematopoietic compartments
- Endothelial cell
- Megakaryocytes
Identify
- Erythroblastic islet
- Penetration of megakaryocyte by white cell
Composition of red bone marrow
- Stroma
- Specialized blood vessels
- Sponge like network of hemopoetic, reticular and other cells
- Some specific cell types
What does stroma of red bone marrow cell include?
- reticular connective tissue
- Reticular (adventitial) cells and reticular fibers
Composition of red bone marrow
-> Specialized blood vessels which are interposed between ___ and ___
arteries and veins
What are cell types included in red bone marrow?
developing blood cells, megakaryocytes, macrophages, mast cells, plasma cells, fat cells
What is Hematopoietic Stem Cell (HSC)?
pluripotential (true) stem cells
What are some functions of Hematopoietic Stem Cell (HSC)?
self-renewal, enormous proliferation, differentiation into multiple cell lineage
Hematopoietic Stem Cell (HSC) can differentiate into multiple cell lineage
-> Name 2 types of cells that can be differentiated into
- Myeloid stem cell
- Lymphoid stem cell
What types of stem cells are myeloid and lymphoid stem cells?
Multipotent stem cells
What can myeloid stem cells differentiate into?
CFU - Gemm
(CFU - Colony Forming Unit Cells)
What can lymphoid SC differentiate into?
B cell and T cell
What type of cells are CFUs, B and T cells?
Progenitor cells
The role of Colony Forming Unit Cells (CFU)?
proliferate and differentiate into precursor cells in the presence of appropriate growth factors
Steps of Erythropoiesis
Synthesis and accumulation of hemoglobin
-> Basophilia → Eosinophilia
-> Extrusion of the nucleus → Reticulocyte
-> Mature erythrocyte
Erythropoiesis
-> Identify
Reticulocyte
Myeloid SC
-> What are some regulatory factors of Erythropoiesis?
erythropoetin (kidney, liver), Iron, Cobalt, C, B6, B12 vitamines
The role of Erythropoetin
Myeloid SC
-> Steps of Megakaryopoesis - thrombopoesis
Megacaryoblast
-> Promegakaryocyte
-> Megakaryocyte
-> Thrombocytes
What is Platelet?
Platelet: irregularly shaped fragments of megacaryocytes
What is the Regulatory factor of Megakaryopoesis - thrombopoesis?
thrombopoetin (liver)
Steps of Granulopoiesis
What are granulator factors of granulopoesis?
(GM-CSF, G-CSF, interleukine 3, 5,6, 11) stromal cells - macrophages, endothel, adventitial cells, fibrocytes, adipocytes
Identify this type of cell
Myleoblast
Identify this type of cell
Promyelocyte
Identify this type of cell
Early neutrophilic myelocyte
Identify this type of cell
Early basophilic myelocyte
Steps of Monopoesis in YOLK SAC
Steps of Monopoesis in FETAL LIVER
Steps of Monopoesis in ADULT BONE MARROW
Steps of Monopoesis in ADULT PERIPHERAL BLOOD
Steps of Monopoesis in ADULT TISSUES