Question 1

What is the immune system?

Accepted Answer

The immune system is your body's defense team. It protects you from germs, like bacteria and viruses, which can make you sick.

Question 2

Why is the immune system important?

Accepted Answer

The immune system is important because it helps keep you healthy. It fights off harmful invaders that try to make you sick.

Question 3

What are white blood cells?

Accepted Answer

White blood cells are like tiny soldiers in your body. They help find and attack germs that can make you sick.

Question 4

How does the immune system find germs?

Accepted Answer

The immune system uses special cells to recognize things that don't belong in your body. When it finds them, it works to get rid of them.

Question 5

Can the immune system remember germs?

Accepted Answer

Yes, the immune system can remember germs it has fought before. This helps it fight them faster if they come back.

Question 6

What are antibodies?

Accepted Answer

Antibodies are like little flags that stick to germs. They help your immune system find and attack the germs more easily.

Question 7

What is a vaccine?

Accepted Answer

A vaccine is a special medicine that helps your immune system learn how to fight a specific germ. It prepares your body so you don't get sick if you meet the real germ.

Question 8

How can you keep your immune system healthy?

Accepted Answer

You can keep your immune system healthy by eating fruits and vegetables, getting enough sleep, and washing your hands often. Exercise also helps!

Question 9

What happens when you get sick?

Accepted Answer

When you get sick, your immune system works hard to fight off the germs and make you better. You might get a fever because your body is trying to kill the germs with heat.

Question 10

What are lymph nodes?

Accepted Answer

Lymph nodes are small, bean-shaped things in your body. They help filter out germs and alert the immune system to fight back.

Question 11

Can your immune system ever make mistakes?

Accepted Answer

Yes, sometimes it can make mistakes and attack healthy parts of your body. This can cause things like allergies or autoimmune diseases.

Question 12

What are some signs that your immune system is working?

Accepted Answer

Signs that your immune system is working include a runny nose, a fever, or feeling tired. These are ways your body fights germs.

Question 13

What is an allergy?

Accepted Answer

An allergy happens when the immune system thinks that something harmless, like pollen, is a dangerous germ. It overreacts and causes sneezing and itching.

Question 14

What can weaken the immune system?

Accepted Answer

Things like not getting enough sleep, eating unhealthy food, and being too stressed can weaken your immune system. It's important to take care of your body to keep it strong.

Question 15

What does it mean to be immune to something?

Accepted Answer

Being immune means your body knows how to fight a germ and you won't get sick from it. This can happen after you've had a vaccine or been sick before.

Question 16

Why do some people rarely get sick?

Accepted Answer

Some people have strong immune systems that do a good job of fighting germs. Eating healthy food, getting enough sleep, and exercise can help, too.

Question 17

How does the skin help the immune system?

Accepted Answer

The skin is like a shield that helps stop germs from getting inside your body. It's one of the first barriers to keep you safe.

Question 18

What is inflammation?

Accepted Answer

Inflammation is when part of your body gets red, hot, and swollen. It's a sign the immune system is working to fix an injury or fight germs.

Question 19

What are germs?

Accepted Answer

Germs are tiny creatures, like bacteria and viruses, that can make you sick. Some germs are bad, but not all germs are harmful.

Question 20

How do we get germs?

Accepted Answer

Germs can spread through touching, sneezing, coughing, or sharing things with someone who's sick. They can be on surfaces or in the air around us.

The Human Immune System and Its Functions - 20 FAQs Explained Simply