imm 2 Flashcards
Where are all our immune effector cells derived from?
From a common pluripotent progenitor cell (Hematopoietic stem cells/0 type in bone marrow
What are all our immune effector cells a part of?
Our Hematopoietic blood system
What are pluripotent progenitor cell?
Hematopoietic stem cells (hematopoietic relating to blood)
What are all our white blood cells called?
Leukocytes
Name some white blood cells
Ganulocytes| Megakaryocyte
Following stem cell division what can a daughter cell do?
- Divide| 2. Differentiate
Why is it a benefit that some of our daughter cells don’t differentiate but divided into more stem cells?
Means we have stem cells to replenish our blood system as we get older
What is the first step of differentiation a stem cell can take?
Cells can either become:1. A Common lymphoid progenitor 2. A common myeloid progenitor
What do Common lymphoid progenitor give rise to?
B cellsT cellsNK cells
What do Common myeloid progenitor give rise to?
Granulocytes and megakaryocytes (White blood cells)| Or dendrites
What happens to a cell as it further differentiates?
They lose the ability to self renew
Name our adaptive effector cells
B cells (which give plasma cells)T cells (which give activated T cells)
Name our innate effector cells
NK cells (which give us activated NK cells)Dendritic cells (both mature and immature)Neutrophils EosinophilsBasophils MonocytesMast cellsMacrophages
What lineage do dendritic cells come from?
Ether a myeloid or lymphoid lineage
Name the only type if lymphocytes that are considered innate
NK cells| natural killer cells
What are monocytes?
The precursor to macrophages
Which is the mature effector: the macrophage or the monocyte?
The macrophage
Where are immature monocytes found?
They circulate the blood
Where are mature macrophages found?
Found in most tissues in sub mucosal layers.
What is the function of monocytes and macrophages
- They are the first responders2. Phagocytic3. Engulf and kill pathogens and infected cells4. Clear dead cells and debris5. Bactericidal6. Present antigen to T cells7. Activate other immune cells8. Induce inflammation
Do macrophages and monocytes have a long or short lifespan?
Relatively Long
What does it mean a cell is phagocytic?
They can engulf and kill pathogens and infected cells| They can also clear dead cells and debris
What is another name for granulocytes?
Polymorphonuclear leukocytes
Name the 3 types of granulocytes
- Neutrophils2. Eosinophils3. Basophils