The Diaphragm: Your Breathing Muscle
A cross-section view shows the diaphragm contracting and relaxing during inhalation and exhalation. Students color the lungs expanding and shrinking while answering questions about muscle function and air pressure changes.
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This asset is part of Free Printable Respiratory System Worksheet for Science Class published by SheetForge. Licensed under CC BY 4.0 — Free for personal use. Free to use with attribution.