Parts of the Respiratory System
The Journey of Oxygen and Carbon Dioxide
How Body Systems Work Together
Healthy Lungs
Fun Facts
100

This large muscle contracts and relaxes, forcing air in and out of our bodies.

What is the diaphragm? 

100

These two parts of the respiratory system are the first place oxygen enters the body, and they allow us to bring air into our bodies.

What are the nose and mouth?

100

This system helps transport the oxygen our lungs bring in around to the rest of our body, and brings bad air (carbon dioxide) back to the lungs to be released.

What is the Respiratory System?

100

This simple habit helps keep your lungs healthy by giving your body the oxygen it needs and helping your lungs work better.

What is deep breathing?

100

This is the only human organ that can float on water.

What are the lungs?

200

This is another term for our "throat" and brings air from our mouths to our trachea.

What is the Pharynx?

200

Oxygen branches off of the bronchi into these structures that are as small as a hair.

What are the bronchioles? 

200

This system protects our lungs from being damaged or hurt.

What is the digestive system?

200

This habit can severely damage your lungs and lead to respiratory diseases such as bronchitis and emphysema.

What is smoking?

200

Because your body has less oxygen when you are tired, this biological response pulls in more air.

What is yawning?

300

This is the large hollow portion of our body that houses not only our lungs and other vital organs, also called the chest cavity.

What is the Thorax?

300

Once the air reaches these tiny sacs, oxygen and carbon dioxide are exchanged with the blood.

What are the Alveoli? 

300

This system uses electrical impulses to force our bodies to always breathe, even when we are not thinking about it.

What is the Nervous System?

300

This practice helps keep your lungs healthy by increasing lung capacity and improving oxygen delivery.

What is exercise?

300

This lung is smaller because it has to make room for our heart.

What is the left lung?

400

This is the rigid tube that brings oxygen from the pharynx to the lungs.

What is the Trachea?

400

These small hair like structures keep our lungs clean by trapping dust and bacteria before they can get in.

What are Cilia?

400

This system provides works with oxygen to help our body's cells create ATP, which is energy. It also helps provide the energy our body uses to create more red blood cells.

What is the digestive system?

400

This is the disease that causes the airways to narrow and swell, making it difficult to breathe, especially during physical activity.

What is asthma?

400

Hiccupping is a result of this.

What is the diaphragm moving uncontrollably?

500

These tubes branch off from the trachea and lead air to each lung.

What are the Bronchi?

500

After passing through the pharynx, air travels into this structure, where it vibrates to create sound.

What is the Larynx a.k.a. the voice box?

500

This system helps protect our bodies from any of the harmful bacteria and germs that we may accidently breathe into our lungs along with oxygen.

What is the Lymphatic System?

500

The term for an inflammation of the lungs caused by an infection, leading to symptoms like coughing and difficulty breathing.

What is pneumonia? 

500

This part of our body closes when we eat or drink to stop food or water from going into our lungs and causing us to choke.

What is an epiglottis?