Topic 6: T cells

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  • Created by: sakiya
  • Created on: 23-01-19 22:52
Where are T cells found?
Mature T cells are found at the thymus (where they are specialised from an immature T cell to a mature T cell).
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What are the main functions of a T helper cell?
They activate phagocytosis by releasing the cytokines, they release cytokines to stimulate B cells, they help T killer cells identify infected body cells.
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What do T killer cells do?
They destroy infected body cells.
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How are activated T killer/ memory T killer cells formed?
After a cell is infected a T killer cells with CD8 receptors binds on. A clone of T killer memory cells and active T killer cells are formed.
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How do active T killer cells destroy pathogens?
They use chemicals and cylindrical proteins to cause the cell to swell and burst resulting in lysis.
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What do T suppressor/ T regulator cells do?
They bring immune levels back to normal by killing off excess cells in the immune system e.g. T helper cells or plasma B cells.
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What do T memory cells so?
They are long lived, allowing clonal selection to occur quickly, destroying the pathogen faster.
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How do you activate a T helper cell?
After phagocytosis occurs the macrophage binds on to CD4 receptors on the T cell and then forms a clone of T memory cells and active T helper cells.
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Card 2

Front

What are the main functions of a T helper cell?

Back

They activate phagocytosis by releasing the cytokines, they release cytokines to stimulate B cells, they help T killer cells identify infected body cells.

Card 3

Front

What do T killer cells do?

Back

Preview of the front of card 3

Card 4

Front

How are activated T killer/ memory T killer cells formed?

Back

Preview of the front of card 4

Card 5

Front

How do active T killer cells destroy pathogens?

Back

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