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
Name Is 4Minute Name Is 4Minute Name Is 4Minute is the fourth mini-album by South Korean girl group 4minute, released on April 26, 2013. It features the lead single "What's Your Name?", which became the group's most successful single after peaking at number one on the Gaon Singles Chart and being one of the best selling singles of the year. On February 4, 2013, Cube Entertainment announced that 4Minute would release new material in the first half of the year. It was further explained that their new music would more closely resemble their debut sound, more "groovy and powerful" according to their record