How We Breathe The Respiratory System
Grade 4th Grade · Science · 45 min
What's Included
Learning Objective
I can describe how the respiratory system helps us breathe.
Warm-Up Video
TED-Ed · 3:22
How do lungs work? - Emma Bryce
Guided Notes
3 key 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.
Practice Questions
11 questions · Multiple choice & Short answer
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.”
Complete Lesson Package
Get all 3 ready-to-use resources:
