Trachea annular ligaments of trachea. The epiglottis closes the opening to the larynx during swallowing. The trachea develops in the second month of development. It is lined with an epithelium that has goblet cells which produce protective mucins (see "Respiratory epithelium"). An inflammatory condition, also involving the larynx and bronchi, called croup can result in a barking cough. A tracheotomy is often performed for ventilation in surgical operations where needed. Intubation is also carried out for the same reason by the inserting of a tube into the trachea. From 2008, operations have experimentally transplanted a windpipe grown by stem cells, and
Body in the cylinder that it had been part of a ventilation shaft. On 13 July 1945 three small boys were playing with the cylinder. They were rolling it through the streets when one tried to see what was inside. At first they saw what appeared to be a shoe, however, on closer inspection it appeared to be part of an human skeleton. The police were called to the scene and they used an Oxy acetylene burner to cut the cylinder open. The contents were revealed to be a complete human skeleton accompanied by a number of items. The police removed the remains and