The Immune System

Study Notes

Immune System Basics

The immune system recognizes pathogens, such as bacteria, viruses, and fungi, as invaders.
The main function of the immune system is to protect the body against disease and infection.

White Blood Cells

White blood cells, also known as leukocytes, play a crucial role in the immune system.
When harmful microbes enter the body, white blood cells help to fight infection by attacking and destroying the invading pathogens.

Immune System Function

When harmful microbes enter the body, the immune system responds by activating white blood cells and other immune responses to fight the infection.
An underactive or overactive immune system can cause various health problems, including allergies, autoimmune disorders, and immunodeficiency diseases.

Vaccines and Immune System

Vaccines help the immune system by introducing a small, harmless piece of a pathogen, which triggers an immune response, allowing the body to build immunity against future infections.
Vaccines enable the immune system to recognize and respond to specific pathogens, providing protection against disease.

Non-Immune System Components

The following is NOT a component of the immune system: [insert specific component, e.g., skin, muscles, etc.].

Description

Test your knowledge of the immune system and its role in defending the body against infection. Learn about the complex network of cells, chemicals, tissues, and organs that make up this vital defense system. Explore how an underactive or overactive immune system can impact your health. Challenge yourself with questions about immune response and the recognition of invaders.