Podcast
Questions and Answers
What role do macrophages and neutrophils play in innate immunity?
What role do macrophages and neutrophils play in innate immunity?
- They identify and engulf harmful microorganisms. (correct)
- They cause inflammation through chemical mediators.
- They create antibodies specific to pathogens.
- They produce complement proteins.
Which physical barrier is NOT part of innate immunity?
Which physical barrier is NOT part of innate immunity?
- Saliva
- Skin
- Mucous membranes
- Antibodies (correct)
How does fever contribute to innate immunity?
How does fever contribute to innate immunity?
- It increases the production of antibodies.
- It directly destroys pathogens through heat.
- Higher body temperatures inhibit the growth of some pathogens. (correct)
- It activates white blood cells more quickly.
What component is a key aspect of inflammation?
What component is a key aspect of inflammation?
In what way is innate immunity categorized?
In what way is innate immunity categorized?
What function does the complement system serve in innate immunity?
What function does the complement system serve in innate immunity?
What is an example of a chemical barrier involved in innate immunity?
What is an example of a chemical barrier involved in innate immunity?
Flashcards
Innate Immunity
Innate Immunity
The body's first line of defense against infections, acting non-specifically against any invading pathogen.
Physical Barriers
Physical Barriers
Skin and mucous membranes that block pathogens from entering the body.
Chemical Barriers
Chemical Barriers
Substances like stomach acid and saliva enzymes that destroy pathogens.
White Blood Cells (WBCs)
White Blood Cells (WBCs)
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Inflammation
Inflammation
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Fever
Fever
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Complement System
Complement System
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Study Notes
Innate Immunity Overview
- Innate immunity is the body's first line of defense against infection.
- Physical barriers, like skin and mucous membranes, prevent pathogens from entering the body.
- Chemical barriers, such as stomach acid and saliva enzymes, destroy pathogens.
- White blood cells (macrophages, neutrophils) identify and engulf invaders.
- Inflammation, characterized by redness, heat, and swelling, isolates and eliminates harmful agents.
- Fever inhibits pathogen growth by raising body temperature.
- The complement system is a group of proteins that destroy bacteria.
- Innate immunity is non-specific, targeting any invading pathogen.
- Innate immunity acts rapidly, within minutes to hours.
- Innate immunity is crucial for protecting the body from common threats.
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