Dr Oz: What Mucus Tells You
In this segment, Dr Oz pulled up an audience member, Keisha to demonstrate the purpose of mucus. (This is probably one time I would not want to be pulled from the audience. Yuck!)
Keisha held up a plastic screen, labeled mucus. Dr Oz used a fan and fake paper pieces that represented foreign particles. He turned on the fan and the particles blew all over the place. Keisha had to use the mucus screen to catch the particles. This experiment demonstrated that it is mucus that catches the foreign particles and keeps them away from our lungs.