Labels:daily OCR: INDPIPE YOUR WINDPIPE, or trachea. tube that links your throat to your lungs. It is about 12 cm (5 inches long and 2.5 cm inch) wide. There are 16 to 20 -shaped rings of tough. flexible material callied cartilage, which surround the front and sides the W indpipe. These keep it rigid and open at all tim es to prevent t it collapsing when you brea the. The inside of your windpipe IS lined with sticky mucus, which traps dust particles and Auy hair-like cilia which beat rhythmically The cilia move the dust up to the throat. where it can be coughed up VOUR called asnp
