Question 1

What is the respiratory system?

Accepted Answer

The respiratory system is the part of our body that helps us breathe. It brings in oxygen that we need and gets rid of carbon dioxide, which we don't need.

Question 2

Why do we need to breathe?

Accepted Answer

We need to breathe to get oxygen into our bodies, which helps our cells make energy. Breathing also helps us get rid of carbon dioxide, which is waste from making energy.

Question 3

What are the main parts of the respiratory system?

Accepted Answer

The main parts include the nose, mouth, trachea (or windpipe), lungs, and diaphragm. All these parts work together to help us breathe in and out.

Question 4

How do the lungs work?

Accepted Answer

The lungs are like big sponges that fill up with air when we breathe in. They take oxygen from the air and pass it into our blood.

Question 5

What is the trachea?

Accepted Answer

The trachea, or windpipe, is a tube that carries air from the nose and mouth to the lungs. It's like the main highway for air to enter your lungs.

Question 6

Why do we breathe through our nose?

Accepted Answer

Breathing through the nose helps filter and clean the air. The nose also warms and moistens the air before it goes to the lungs.

Question 7

What is the diaphragm?

Accepted Answer

The diaphragm is a muscle under your lungs that helps you breathe. It moves down to let your lungs fill with air and moves up to push air out.

Question 8

What happens to air when we breathe it in?

Accepted Answer

When we breathe in, air enters through our nose or mouth and goes down the trachea to our lungs. In the lungs, oxygen from the air goes into our blood.

Question 9

What is carbon dioxide?

Accepted Answer

Carbon dioxide is a gas that our body makes when it uses oxygen. We breathe it out because we don't need it and too much is bad for us.

Question 10

How do our lungs clean the air we breathe?

Accepted Answer

Our lungs have tiny hairs and mucus that trap dust and germs in the air. This helps keep our body safe and healthy.

Question 11

Can we control our breathing?

Accepted Answer

Yes, we can control our breathing, like when we take deep breaths or hold our breath. But most of the time, our body breathes without us thinking about it.

Question 12

Why do we yawn?

Accepted Answer

Yawning helps take in a big breath of air, which can help wake up our body or cool down our brain. It's also something we often do when we're tired or bored.

Question 13

What are bronchi?

Accepted Answer

Bronchi are two big tubes that branch off from the trachea into each lung. They help carry air deeper into your lungs.

Question 14

How do we sneeze?

Accepted Answer

Sneezing happens when our nose gets tickled by dust or pollen. Our body quickly pushes air out through our nose to get rid of these irritants.

Question 15

What happens when we cough?

Accepted Answer

Coughing helps clear our throat and lungs from things that shouldn't be there, like dust or mucus. It's our body's way of keeping the airways clean.

Question 16

Why do we need oxygen?

Accepted Answer

Oxygen is needed by our cells to make energy, so we can play, run, and think. Without oxygen, our cells wouldn't work properly.

Question 17

How does air travel in our respiratory system?

Accepted Answer

Air goes from our nose or mouth down the trachea, through the bronchi, and into the lungs. Once in the lungs, oxygen is taken into the blood.

Question 18

What are alveoli?

Accepted Answer

Alveoli are tiny air sacs in the lungs. They are where oxygen moves into the blood and carbon dioxide moves out of the blood to be breathed out.

Question 19

How does exercise affect our breathing?

Accepted Answer

When we exercise, our muscles use more oxygen and make more carbon dioxide, so we breathe faster to get more oxygen and get rid of the extra carbon dioxide. This helps our body keep up with the activity.

Question 20

Why is it hard to breathe when you have a cold?

Accepted Answer

A cold can cause your nose and airways to fill with mucus, making it harder for air to pass through. That's why you might feel stuffy or have to breathe through your mouth when you're sick.

The Anatomy of the Human Respiratory System - 20 FAQs Explained Simply