Podcast
Questions and Answers
Which of the following is NOT a component of the immune system's first line of defense?
Which of the following is NOT a component of the immune system's first line of defense?
- Saliva
- Skin
- Mucus and cilia
- Antibodies (correct)
How does skin contribute to the immune system's defense?
How does skin contribute to the immune system's defense?
- By actively engulfing and destroying pathogens through phagocytosis.
- By serving as a physical barrier and shedding pathogens along with dead cells. (correct)
- By triggering an inflammatory response upon pathogen detection.
- By producing antibodies that neutralize pathogens.
What is the primary role of mucus and cilia in respiratory defense?
What is the primary role of mucus and cilia in respiratory defense?
- To trap and remove pathogens from the respiratory system. (correct)
- To stimulate antibody production in the lungs.
- To directly kill pathogens using enzymatic reactions.
- To initiate fever as a systemic response to infection.
Sneezing and coughing are best described as what type of immune mechanisms?
Sneezing and coughing are best described as what type of immune mechanisms?
How does saliva contribute to the immune system?
How does saliva contribute to the immune system?
Which of the following illustrates a combined mechanical and chemical defense against pathogens?
Which of the following illustrates a combined mechanical and chemical defense against pathogens?
If a person has a genetic defect that impairs their ability to produce mucus, which of the following consequences is most likely?
If a person has a genetic defect that impairs their ability to produce mucus, which of the following consequences is most likely?
Which of the following scenarios would most directly compromise the function of the skin as an immune defense?
Which of the following scenarios would most directly compromise the function of the skin as an immune defense?
How do the mechanical actions of sneezing and coughing support the function of chemical defenses in the respiratory system?
How do the mechanical actions of sneezing and coughing support the function of chemical defenses in the respiratory system?
An individual with a condition that reduces saliva production is likely to experience increased:
An individual with a condition that reduces saliva production is likely to experience increased:
Flashcards
First line of defense
First line of defense
The body's initial defense mechanisms against pathogens, including physical and chemical barriers.
Skin
Skin
A physical barrier that prevents pathogens from entering the body.
Chemicals in oil & sweat
Chemicals in oil & sweat
Substances in sweat and oil that kill or inhibit pathogens on the skin.
Mucus & cilia
Mucus & cilia
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Sneezing & coughing
Sneezing & coughing
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Saliva
Saliva
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Study Notes
- The immune system's initial defense includes the skin, chemicals in oil and sweat, mucus and cilia, sneezing and coughing, and saliva.
- Skin acts as a physical barrier, and pathogens are shed along with dead skin cells.
- Mucus and cilia trap and remove pathogens from the respiratory system.
- Sneezing and coughing are mechanisms to expel pathogens.
- Saliva contains destructive chemicals.
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