lungs working model science project exhibition - diy - simple steps - respiratory system | DIY Pandit
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Introduction to Lungs Working Model with Rotation Concept

This lungs working model demonstrates how the human respiratory system functions, focusing on the mechanics of inhalation and exhalation.

The model uses balloons to represent the lungs, a plastic bottle as the chest cavity, and syringes to pump air, simulating the breathing process.

Components of the Model:

Balloons as Lungs: Two balloons are used to represent the lungs. These balloons inflate and deflate, mimicking the process of inhalation and exhalation as air is pumped in and out.

Plastic Bottle as Chest Cavity: A clear plastic bottle acts as the chest cavity. The balloons are placed inside the bottle, which simulates the ribcage. The bottle's structure helps demonstrate how the chest expands and contracts during breathing.

Syringes for Air Pumping: Syringes are attached to the model to manually pump air into the balloons. By pulling and pushing the syringe plungers, air is drawn into the balloons (inhalation) and then expelled (exhalation).

Rotation Mechanism: The model is designed with a rotation mechanism that allows the bottle to tilt or rotate.

How It Works:

Inhalation: When the syringe plungers are pulled, air is drawn into the balloons inside the plastic bottle, causing them to inflate. This simulates the process of inhalation, where the diaphragm contracts and the lungs fill with air.

Exhalation: Pushing the syringe plungers expels air from the balloons, causing them to deflate. This represents exhalation, where the diaphragm relaxes and the lungs release air.

Rotation Concept: By rotating or tilting the model, you can observe how different angles affect the inflation and deflation of the balloons. This demonstrates how posture and body position can impact breathing and lung function.