Trachea act as a resonator to amplify sound. In some birds, the tracheal rings are complete, and may even be ossified. In amphibians, the trachea is normally extremely short, and leads directly into the lungs, without clear primary bronchi. A longer trachea is, however, found in some long-necked salamanders, and in caecilians. While there are irregular cartilagenous nodules on the amphibian trachea, these do not form the rings found in amniotes. The only vertebrates to have lungs, but no trachea, are the lungfish and the "Polypterus", in which the lungs arise directly from the pharynx. The word "trachea" is used to
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