Trachea the trachea. The trachea is no more than 4mm diameter during the first year of life, expanding to its adult diameter by late childhood. The trachea is more mobile and of more variable length, deeper, and smaller in children. The trachea is lined with a layer of pseudostratified ciliated columnar epithelium. The epithelium contains goblet cells, which are glandular, modified simple columnar epithelial cells that produce mucins, the main component of mucus. Mucus helps to moisten and protect the airways. Mucus lines the ciliated cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward
Less Commonly Taught Languages individuals interested in less commonly taught languages" founded in 1990 and based at the Indiana University Bloomington. The Council's mission is to increase the number of Americans who choose to learn one or more of the less commonly taught languages (LCTLs) as a means of enhancing cross-cultural communication among citizens of the United States . ... The Council seeks to improve the teaching and learning of these languages and to make them more generally available. The Council is the national voice for organizations and individuals who represent the teaching of these less commonly taught languages at both the collegiate and