How We Breathe The Respiratory System
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Objective
I can describe how the respiratory system helps us breathe.
Part 1 of 4
Warm-up video
TED-Ed · 3:22Vetted channel
We don't generate video — this one is by TED-Ed on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
The autonomic nervous system signals muscles around the lungs, flattening the diaphragm and contracting intercostal muscles to create space for the lungs to expand.
- 2
Air travels through the trachea and into the bronchi, which split into thousands of smaller passages called bronchioles.
- 3
At the end of each bronchiole is an air sack called an alveolus, where oxygen and carbon dioxide are exchanged.
Part 3 of 4
Practice
11 questions
What is the main job of the respiratory system?
Name two parts of the respiratory system.
Part 4 of 4
Exit ticket
Quick comprehension check
“Describe the path that air takes as it enters your body, goes into your lungs, and then leaves your body.”
Sample answer included in the free materials
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