Immune and Lymphatic Systems

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What is a pathogen?

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Something that makes you sick.

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What is the job of your immune system?

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To protect you from disease.

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A pathogen that depends on living things to reproduce is a:

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Virus.

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What is a noninfectious disease?

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A disease that cannot be passed and is not caused by a pathogen.

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What is the difference between infectious and noninfectious diseases?

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Infectious diseases are caused by pathogens and can be passed from one person to another, while noninfectious diseases cannot be transmitted and are not caused by pathogens.

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What are the main types of pathogens?

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Bacteria, viruses, fungi, and parasites.

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What is a vaccine?

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A substance that helps the body develop immunity to a disease.

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How does the immune system respond to pathogens?

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It identifies and attacks the pathogens to protect the body.

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What is an example of a contagious disease?

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Flu or common cold.

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What role do white blood cells play in the immune system?

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They help fight infections by attacking pathogens.