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
The Unknown Known for Rumsfeld, Iraq. At one point, Morris asks Rumsfeld, "Have you seen "The Fog of War"? What do you think about that?" to which Rumsfeld responds, "I hate it. That man had nothing to apologize for." Morris himself has been resistant to comparisons, stating "You can’t call this ‘"The Fog of War 2".’ I can’t imagine two individuals more unalike." The Unknown Known The Unknown Known (also known as The Unknown Known: The Life and Times of Donald Rumsfeld) is a 2013 American documentary film about the political career of former U.S. Secretary of Defense and congressman Donald Rumsfeld, directed