Immune System Basics
How to Stay Healthy
Diseases & Infections
Vaccines & Immunity
The Lymphatic System
100

 What is the immune system’s main job?

What is to protect the body from germs and infections?

100

What is one of the most important things you can do to prevent getting sick?

What is wash your hands

100

What is a very common illness caused by a virus?

What is the flu or a cold?

100

What is a vaccine?

What is a shot that teaches the immune system to fight germs?

100

What is the lymphatic system? 

What is a network of vessels and organs that help fight infections and remove waste?

200

What are germs?

What is tiny organisms like bacteria and viruses that can cause disease?

200

Why is sleep important for the immune system?

What is it helps the body repair and fight infections?

200

What type of germ causes strep throat?

What is bacteria?

200

What is herd immunity? 

What is when enough people are vaccinated, so diseases stop spreading?

200

What are lymph nodes, and what do they do?

What is small glands that filter germs from lymph fluid?

300

What is the first line of defense against germs?

What is skin, mucus, and stomach acid?

300

What vitamin is important for immune health and comes from sunlight?

What is vitamin D?

300

How do vaccines help prevent disease?

What is that they train the immune system to recognize and fight germs?

300

What is the difference between active and passive immunity? 

What is active: your body makes antibodies? What is passive: you get antibodies from someone else, like a mother to baby?

300

What organ in the lymphatic system helps train T cells? 

What is the thymus?

400

What is an antigen?

What is a substance, usually on a germ, that triggers an immune response?

400

How does stress affect the immune system?

It can weaken it, making it harder to fight infections?

400

What is a popular example of an autoimmune disease?

What is type 1 diabetes, lupus, or multiple sclerosis?

400

What type of vaccine uses a weakened version of a virus? 

What is live-attenuated vaccine?

400

What is the spleen’s function in the immune system?

What is it filters the blood and helps destroy old red blood cells?

500

What is the difference between innate and adaptive immunity?

What is innate is immediate and general; adaptive is slow but specific and remembers past infections?

500

What is one reason antibiotics shouldn’t be used to treat viral infections?

What is they only work against bacteria, not viruses?

500

How does HIV weaken the immune system?

What is it attacks helper T cells, making it harder for the body to fight infections?

500

How do mRNA vaccines, like COVID-19 vaccines, work? 

What is they give cells instructions to make a harmless part of the virus so the immune system can recognize and attack it?

500

How does the lymphatic system help balance fluids in the body? 

What is it collects excess fluid and returns it to the bloodstream?