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.
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.