Parts of the System
Breathing Process
Gas Exchange
Health & Care
Mixed Review
100

The tube that carries air from the nose and mouth to the lungs.

What is the trachea (windpipe)?

100

: Breathing air into the lungs.

What is inhale (inspiration)?

100

The tiny air sacs in the lungs where oxygen enters the blood.

What are alveoli?

100

This condition makes the airways swell and tighten, causing wheezing and coughing.

What is asthma?

100

The main job of the respiratory system.

What is bringing in oxygen and removing carbon dioxide?

200

These two organs fill with air when you breathe.

What are the lungs?

200

Breathing air out of the lungs.

What is exhale (expiration)?

200

The waste gas that leaves the body when we exhale.

What is carbon dioxide (CO₂)?

200

This happens when the body reacts strongly to pollen, dust, or pet dander.

What are allergies?

200

The windpipe’s real name.

What is the trachea?

300

: The muscle under the lungs that moves up and down to help breathing.

What is the diaphragm?

300

: When you inhale, does the diaphragm move up or down?

Down

300

The gas that gives our cells energy when we breathe it in.

What is oxygen (O₂)?

300

The harmful gas we exhale.

What is carbon dioxide?

300

The gas we breathe in.

What is oxygen?

400

These two tubes branch from the trachea into the lungs.

What are the bronchi?

400

When you exhale, does the diaphragm move up or down?

Up

400

What is the name for oxygen moving into the blood and carbon dioxide leaving the blood?

What is gas exchange?

400

: One healthy habit that keeps the respiratory system strong.

  •  What is exercise / not smoking / avoiding pollution (accept any)

400

The gas we breathe out.

What is carbon dioxide?

500

The two main entryways where air comes into the respiratory system.

What are the nose and mouth?

500

When you inhale, does your chest expand or get smaller?

Expand

500

This system works with the respiratory system to carry oxygen throughout the body.

  • What is the circulatory system?

500

Dirty air, smoke, or chemicals that can damage the lungs.

What is pollution?

500

: The muscle under the lungs that helps us breathe.

What is the diaphragm?

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