Questions and Answers
What is the role of histamine in the immune system?
To attract white blood cells to the site of infection
Which cells play a crucial role in stimulating immune cells to target and eliminate pathogens?
Helper T cells
What is the first line of defense in the immune system?
External barriers like skin and mucous membranes
What is the main function of cytotoxic T cells in the immune system?
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Which immune response involves B cells producing antibodies that bind to antigens on pathogens?
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Which component of the immune system is responsible for recognizing and responding to specific pathogens?
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In the cell-mediated immune response, what mechanism do cytotoxic T cells use to destroy infected cells?
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What is the primary role of helper T cells in the immune response?
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In the humoral immune response, what is the primary function of antibodies produced by B cells?
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Which component of the immune system acts as the first line of defense against pathogens?
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What is the primary function of the inflammatory response in the immune system?
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Study Notes
- The immune system is a complex network of cells that work together to protect the body from pathogens such as viruses, bacteria, fungi, and parasites.
- The first line of defense includes external barriers like the skin and mucous membranes, which serve as nonspecific protection against pathogens.
- If pathogens breach the first line of defense, the second line of defense kicks in with the inflammatory response, where cells release substances like histamine to attract white blood cells to the site of infection.
- The third line of defense is the specific immune response, involving adaptive immunity that targets specific pathogens through cell-mediated and humoral responses.
- In the cell-mediated response, cytotoxic T cells destroy infected cells by releasing signals that trigger apoptosis, or self-destruction of the infected cell.
- Helper T cells play a crucial role in both the cell-mediated and humoral responses by stimulating the immune cells to target and eliminate pathogens.
- The humoral response involves B cells producing antibodies that bind to antigens on pathogens, deactivating them and marking them for destruction by other immune cells.
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