The Immune System!

Overview

Pop Quiz: The Immune System!

Question 1

These bean-shaped structures are an important part of your immune system.

Choices

Axillae, lymph nodes, ribosomes, or antigens

Conclusion

Lymph nodes! They contain white blood cells that fight infection and disease!

Question 2

Let's try another. True or false: When your immune system attacks something harmless, you have an allergy.

Conclusion

That's true! An allergy is an overreaction by your body to something that doesn't harm most people.

Question 3

OK, last one. This organ filters out damaged red blood cells and helps fight infection in your blood.

Choices

Liver, pancreas, gallbladder, or spleen

Conclusion

It's the spleen! This organ, located just behind your stomach, helps filter your blood and keep you healthy. Surprised?