Term
| Two major functions of immune system |
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Definition
1) Destroy pathogens
2) Detect and kill abnormal cells (eg. cancer cells) |
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Term
| Five types of pathogens from largest to smallest |
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Definition
1) Parasitic worms
2) Fungi
3) Protozoa
4) Bacteria
5) Viruses |
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Term
| What type of pathogen is always intracellular? |
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Definition
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Term
| What type of pathogen is always extracellular? |
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Definition
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Term
| When surface barriers are penetrated what is the next line of defense? |
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Definition
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Term
| Four key ways adaptive immunity differs to innate immunity? |
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Definition
1) Specific
2) B & T lymphocytes
3) Memory
4) Systemic |
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Term
| Specific B cells called ________ secrete ________ which bind to antigens? |
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Definition
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Term
| Immunity directed against pathogens in extracellular fluid? |
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Definition
| Antibody mediated immunity |
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Term
| Immunity directed against pathogens within cells? |
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Definition
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Term
| Which type of immunity involves antibodies? |
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Definition
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Term
| Three circumstances when T cells would be activated against body's cells |
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Definition
1) Autoimmune disease
2) Viruses
3) Type II hypersensitivity |
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Term
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Definition
| Surface barriers - skin, mucous membranes |
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Term
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Definition
| Cells and chemicals in body fluids - phagocytes, NK cells, fever & inflammation |
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Term
|
Definition
Specific
Involves T & B lymphocytes
Memory
Systemic |
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Term
| Humoral (cell mediated immunity) |
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Definition
| Directed against pathogens in extracellular fluid. Involves B lymphocytes and antibodies |
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Term
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Definition
| Directed against pathogens within the cells, involves T lymphocytes |
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Term
| Innate internal defense system |
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Definition
1) Phagocytic cells
2) Natural killer cells
3) Antimicrobial proteins (complement and interferon)
4) Inflammation
5) Fever |
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Term
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Definition
| Chemicals secreted by leukocytes and macrophages that have been exposed to foreign substances in the body. Cause body's thermostat to set to higher temp |
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