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Immunology and the Immune System

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Questions and Answers

What is the primary function of the immune system?

To recognize, eliminate, and destroy foreign cells (correct)

To recognize and destroy self-cells

To produce antibodies to fight infections

To promote the growth of foreign cells

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

The innate immune system is non-specific, while the adaptive immune system is specific (correct)

The innate immune system is acquired during our lifetime, while the adaptive immune system is present at birth

The innate immune system is specific, while the adaptive immune system is non-specific

The innate immune system is present at birth, while the adaptive immune system is acquired during our lifetime

What is the purpose of the adaptive immune system?

To recognize and eliminate self-cells

To adapt to changes in the environment

To produce antibodies to fight infections

To change in character following an infection to better fight the infection (correct)

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

<p>Antibodies</p> Signup and view all the answers

When is the innate immune system present?

<p>Present at birth</p> Signup and view all the answers

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.