When you pull down the balloon at the bottom of the model, several things happen:
- The space inside the bottle increases, simulating the expansion of the chest cavity during inhalation.
- The diaphragm, represented by the balloon at the bottom, contracts and moves downward, just like it does during normal breathing.
- The balloons representing the lungs inflate, mimicking the process of air filling the lungs during inhalation.
- The air pressure inside the model decreases, allowing air to flow into the balloons.
- The volume of the balloons increases as they fill with air.
- The model demonstrates how our lungs work, with the balloon at the bottom acting as a diaphragm that expands and contracts to cause the lungs to fill with air and then empty out again.
