Lungs Working Model with Balloons – School Science project


The respiratory system includes nose, pharynx, larynx, trachea, bronchi and lungs. Lungs are the pair of organs that look like air filled balloons located on either side of the chest.

Lungs working model
Lungs working model

Lungs are responsible for pumping the oxygen into the blood through the process of respiration.

In this process, air is breathed through the mouth, that passes through the trachea and is released into the lungs through tubular branches called as bronchi.

The bronchi connect to lungs on either side and then branch out as smaller parts called as bronchioles.

In this video, we show a working model(3D lungs model) of the lungs for class 7, class 10 and so on using materials that are easily available at home like balloons, straws, and cardboard.

Materials Used:

  1. Straws
  2. Tape
  3. Balloons(called a balloon experiment)
  4. Glue
  5. Hard bottle
  6. Thread

You use the resource/tools page section to find the tips where you can buy these materials used at a reasonable cost.

Detailed Video Show How To Make Lungs Working Model with Balloons – School Science project

Questions and Answers:

  1. What are the main functions of the lungs?

a. The main functions of lungs is respiration which is the process of inhalation of oxygen from the air and exhalation of carbon dioxide back into the air.

This oxygen is pumped into the blood vessels for proper functioning of the body.

2) Mention any one way to keep lungs stronger?

A. Lungs are the most important part of the respiratory tract. If not well maintained, it leads to many chronic diseases of the lungs.

One way to keep the lungs stronger is to practice pranayama or breathing on a regular basis.

3) Name any diseases that affect the lungs?

A. Lungs can be affected by variety of diseases. The most common lung diseases are pneumonia, bronchitis and Asthma.

4) Explain the structure of the lungs?

A. Lungs are located in the chest on either side of the heart in the rib cage. They are conical in shape with a narrow structure at the top and slight broad base at the bottom.

The top of the lungs extends to connect to the bronchi which is connected to the wind pipe. There is a central recession called as hilum that has blood vessels and airways pass into the lungs.


Each cell of the body needs oxygen to stay alive and healthy. So, the body gets oxygen from the air along with other gases like carbon dioxide.

This is processed by the lungs so that only oxygen is pumped into the blood vessels and carbon dioxide is released as a waste through exhalation.

There are various lifestyle factors that affect the lungs and health of the body as a whole. Excessive smoking, air pollution, chewing tobacco and other infections affect the lungs badly leading to breathing disorders and pulmonary disorders.

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