Immune System

Front

What is the purpose of the immune system?

Back

The purpose of the immune system is to fight off sickness.

Front

What is the immune system made up of?

Back

The immune system is made up of lymph nodes, cells, tonsils, and more.

Front

What do we call it when the immune system overreacts to something harmless?

Back

When the immune system overreacts to something harmless, it's called an allergy.

Front

Which cells attack bacteria and viruses?

Back

White blood cells attack bacteria and viruses.

Front

Where are lymph nodes found?

Back

Lymph nodes are found in the neck, armpits, and other areas.

Front

What are white blood cells?

Back

White blood cells are cells in the immune system that help fight infections.

Front

What is an allergy?

Back

An allergy is a reaction of the immune system to a substance that is usually harmless.

Front

What role do lymph nodes play in the immune system?

Back

Lymph nodes filter harmful substances and help the immune system fight infections.

Front

What is the difference between red blood cells and white blood cells?

Back

Red blood cells carry oxygen, while white blood cells fight infections.

Front

What can happen if the immune system is weak?

Back

If the immune system is weak, a person may get sick more often.