Breathing In – How Lungs Bring Oxygen into the Body

What's in this exercise

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1. Question 1

   Multiple choice

   What gas do the lungs take from the air when you breathe in?

2. Question 2

   Multiple choice

   What are the tiny air sacs in the lungs called where gas exchange happens?

3. Question 3

   Multiple choice

   What gas is breathed out from the lungs?

4. Question 4

   True or false

   The lungs pass oxygen into the blood and take carbon dioxide out of the blood.

5. Question 5

   Matching

   Match each part of the respiratory system to its description.

More exercises in this module

• Graph Patterns – Understanding What Heart Rate Data Tells Us

• Active Bodies – Why Moving More Means a Healthier Heart

• Activity and Your Body – How Exercise Changes Breathing and Heart Rate

• Inside the Circulatory System – Blood and Its Pathways

• What Blood Carries – Oxygen and Nutrients on the Move

• The Heart as a Pump – How It Keeps Blood Moving