This it is a simple model of lung that will make understand us how these organs work.

What is needed?

  • Empty soda water bottle of 2 liters
  • Plastic stock market (a stock market for trash can be used)
  • Heavy rubber band
  • Big globe
  • Drinking straw
  • Sticky tape
  • Plasticine
  • Scissors
  • What is necessary to do?

  • We cut the bottle of 2 liters by half. We will use the part of above.
  • We cut a squared piece of plastic stock-market. We place on the cut part of the bottle and assured with a rubber band.
  • We inflate the globe to smooth it and we glued it to a drinking straw. Soon we introduce the globe by the mouth of the bottle. We place a little plasticine to assure and that it does not enter air nor leaves.
  • We cut a sticky tape piece, we only doubled by means gluing until half as it is seen in the photo.
  • Finally the sticky tape to means of plastic stock-market is thrown out of reach.

    How it works?

    One gets drunk of the sticky tape and we will notice that the globe is inflated filling of air as a true lung.