Immunology Basics

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Questions and Answers

What is the primary function of the immune system?

  • To recognize and eliminate foreign cells (correct)
  • To promote the growth of foreign cells
  • To create a symbiotic relationship with other organisms
  • To adapt to environmental changes

What is the main characteristic of the innate immune system?

  • It is only present in certain individuals
  • It is non-specific and recognizes anything that is not self (correct)
  • It is specific to certain types of infections
  • It is acquired through exposure to infections

How does the adaptive immune system respond to infections?

  • It remains unchanged and only responds to severe infections
  • It only responds to viral infections
  • It produces a general response to all infections
  • It changes in character to fight specific infections (correct)

What is produced by the adaptive immune system to fight specific infections?

<p>A specific antibody that fights a specific infection (D)</p> Signup and view all the answers

What is the main difference between the innate and adaptive immune systems?

<p>The innate immune system is non-specific, while the adaptive immune system is specific (C)</p> Signup and view all the answers

What would happen if foreign organisms were allowed to spread unchecked in the body?

<p>Death would result (C)</p> Signup and view all the answers

What is a key feature of the innate immune system?

<p>It recognises anything that is not self (D)</p> Signup and view all the answers

What happens to the adaptive immune system following an infection?

<p>It changes character to make it more capable of fighting the infection (A)</p> Signup and view all the answers

What is the relationship between the adaptive immune system and foreign cells?

<p>The adaptive immune system remembers foreign cells (B)</p> Signup and view all the answers

What is a key difference between the innate and adaptive immune systems?

<p>The innate immune system is non-specific, while the adaptive immune system is specific (D)</p> Signup and view all the answers

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Study Notes

Immunology and the Immune System

  • Immunology is the study of the immune system that protects us from foreign organisms and agents.
  • The immune system has three main functions: recognising, eliminating, and destroying foreign cells, as well as remembering them.

Components of the Immune System

  • The immune system consists of two main components: the innate immune system and the adaptive immune system.

Innate Immune System

  • The innate immune system is present from birth and is non-specific, meaning it recognises anything that is "not self".
  • It provides immediate defense against infections and is the first line of defense.

Adaptive Immune System

  • The adaptive immune system changes in character following an infection to make it more capable of fighting the infection.
  • It is specific, meaning a specific cell or agent of the immune system (e.g. an antibody) is produced to fight a specific invasion.
  • The adaptive immune system allows for long-term immunity to specific pathogens.

Immunology and the Immune System

  • Immunology is the study of the immune system that protects us from foreign organisms and agents.
  • The immune system has three main functions: recognising, eliminating, and destroying foreign cells, as well as remembering them.

Components of the Immune System

  • The immune system consists of two main components: the innate immune system and the adaptive immune system.

Innate Immune System

  • The innate immune system is present from birth and is non-specific, meaning it recognises anything that is "not self".
  • It provides immediate defense against infections and is the first line of defense.

Adaptive Immune System

  • The adaptive immune system changes in character following an infection to make it more capable of fighting the infection.
  • It is specific, meaning a specific cell or agent of the immune system (e.g. an antibody) is produced to fight a specific invasion.
  • The adaptive immune system allows for long-term immunity to specific pathogens.

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