human respiratory system working model 3d (lung model ) for science fair project | DIY | howtofunda
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In this video, learn how to make a 3D working model of the human respiratory system (lungs) using simple materials like balloons, plastic bottle, straws, and rubber sheet. This model clearly shows how lungs work when we breathe in and out.

What You'll Learn:

Structure of the respiratory system
Function of lungs, trachea, and diaphragm
Demonstration of inhalation and exhalation using balloon lungs


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