The Body's Defense System: Internal & External Defenses Video


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Which of the following parts of the body is NOT considered external?

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1. Which of the following is NOT an example of something your body has to fight?

2. Which of the following is a part of the external defense system that kills bacteria and viruses directly?

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About This Quiz & Worksheet

The human body is very resilient with both internal and external defenses that help overcome several foreign invaders. Test your knowledge of the human body's defenses by completing these assessments. Topics include foreign invaders and the different parts of the defense systems.

Quiz & Worksheet Goals

In these helpful materials, you will be able to check your knowledge of:

  • What happens to antibodies once the virus or bacteria that they target are gone
  • Parts of the internal defense system that kill bacteria
  • An example of something your body has to fight
  • The external defense system

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related lesson on the human body's defenses
  • Information recall - access the knowledge you have gained about the external defense system
  • Knowledge application - use your knowledge to answer questions about how the body responds to bacteria and viruses

Additional Learning

If you are looking to review more information about the human body's defenses, use the lesson called The Body's Defense System: Internal & External Defenses. This lesson will help you:

  • Compare and contrast the internal and external defense system
  • Learn about the roles of antibodies and the immune system
  • Examine the factors that can affect your body in a negative way
  • Identify the side effects of your body's immune system working