![2 bell jars labelled a inspiration, and b expiration. Glass tubes represent the trachea and bronchi. Balloo… | Human body systems, Human body projects, Body systems 2 bell jars labelled a inspiration, and b expiration. Glass tubes represent the trachea and bronchi. Balloo… | Human body systems, Human body projects, Body systems](https://i.pinimg.com/originals/37/6f/5e/376f5e4e288f2fbcca270ad07bc7c578.png)
2 bell jars labelled a inspiration, and b expiration. Glass tubes represent the trachea and bronchi. Balloo… | Human body systems, Human body projects, Body systems
![Diaphragm-lung demonstration. Image 1 of 2. Bell jar, balloons (red) and a rubber seal (green) being used to demonstrate the principles of the human l Stock Photo - Alamy Diaphragm-lung demonstration. Image 1 of 2. Bell jar, balloons (red) and a rubber seal (green) being used to demonstrate the principles of the human l Stock Photo - Alamy](https://c8.alamy.com/comp/2ADH2M1/diaphragm-lung-demonstration-image-1-of-2-bell-jar-balloons-red-and-a-rubber-seal-green-being-used-to-demonstrate-the-principles-of-the-human-l-2ADH2M1.jpg)
Diaphragm-lung demonstration. Image 1 of 2. Bell jar, balloons (red) and a rubber seal (green) being used to demonstrate the principles of the human l Stock Photo - Alamy
![Breathing mechanism diagram from the human biology textbook. From "The... | Download Scientific Diagram Breathing mechanism diagram from the human biology textbook. From "The... | Download Scientific Diagram](https://www.researchgate.net/profile/David-Treagust-2/publication/283668137/figure/fig1/AS:295259771817986@1447406823234/Bell-jar-model_Q320.jpg)
Breathing mechanism diagram from the human biology textbook. From "The... | Download Scientific Diagram
![Students' Learning Strategies With Multiple Representations: Explanations of the Human Breathing Mechanism - WON - 2014 - Science Education - Wiley Online Library Students' Learning Strategies With Multiple Representations: Explanations of the Human Breathing Mechanism - WON - 2014 - Science Education - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/1d344740-df4d-4899-b53d-69d01db57d3a/sce21128-fig-0004-m.jpg)