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Questions and Answers
What are the components of the second line of defense?
What are the components of the second line of defense?
- Epithelial barriers
- Skin and mucous membranes
- Leukocytes, macrophages, antimicrobial proteins, natural killer cells, fever, and inflammation (correct)
- Adaptive immunity
Which part of the body forms the first line of defense?
Which part of the body forms the first line of defense?
- Macrophages
- Natural killer cells
- Epithelial barriers (correct)
- Leukocytes
What is the third line of defense known as?
What is the third line of defense known as?
- Macrophages
- Fever and inflammation
- Adaptive immunity (correct)
- Leukocytes
What is impenetrable to most pathogens according to the text?
What is impenetrable to most pathogens according to the text?
What are the components of the third line of defense?
What are the components of the third line of defense?
What leaves the body with a 'memory' of the pathogen?
What leaves the body with a 'memory' of the pathogen?
Which of the following is impenetrable to most pathogens?
Which of the following is impenetrable to most pathogens?
What is the main function of leukocytes and macrophages in the second line of defense?
What is the main function of leukocytes and macrophages in the second line of defense?
What leaves the body with a 'memory' of the pathogen?
What leaves the body with a 'memory' of the pathogen?
What are some components of the second line of defense?
What are some components of the second line of defense?
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Study Notes
Immunity System
- The body has two types of defense systems: nonspecific and specific.
Nonspecific Defense System
- Protects against a variety of invaders.
- Responds immediately to protect the body from foreign materials.
- Does not differentiate between types of invaders.
Specific Defense System
- Provides specific defense against each type of invader.
- Required for each type of invader.
- Also known as the immune system.
Key Points
- The immune system is a defense system that protects the body against foreign materials.
- It consists of both nonspecific and specific defense mechanisms.
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