TOPIC 19 DAY 2 SPECIFIC IMMUNE DEFENSES

Front

What is the role of macrophages in the immune system?

Back

Macrophages ingest and kill pathogens, as well as clean up dead cells.

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What is the function of natural killer cells?

Back

Natural killer cells puncture the cell membranes of infected cells and cancer cells.

Front

What is a specific immune response?

Back

A specific immune response is a targeted reaction by the immune system, such as Helper T cells activating B cells.

Front

What is a nonspecific immune response?

Back

A nonspecific immune response is a general defense mechanism, such as the inflammatory response.

Front

How does the inflammatory response help defend against infection?

Back

The release of histamine increases blood flow, bringing white blood cells to the site of infection.

Front

What do vaccines do to the immune system?

Back

Vaccines stimulate the immune system to create 'memory cells' that produce antibodies against specific pathogens.

Front

What are memory cells?

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Memory cells are long-lived immune cells that remember past infections and help the body respond more effectively to future infections.

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What is the difference between active and passive immunity?

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Active immunity is developed through exposure to pathogens or vaccination, while passive immunity is acquired through antibodies from another source.

Front

What is the role of B cells in the immune response?

Back

B cells produce antibodies that specifically target and neutralize pathogens.

Front

What is the role of T cells in the immune response?

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T cells help regulate the immune response and can directly kill infected cells.