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
United We Stand: What More Can I Give this was because Jackson signed a contract with CBS (the former owner of his record label) over the 30th Anniversary Special to not appear under his name in any other program; the airing of "Man in the Mirror" at an awards ceremony was also canceled. John Stamos hosted the event, and appearances were also made by celebrities including Kevin Spacey along with political figures such as the mayor of Washington, D.C.. United We Stand: What More Can I Give United We Stand: What More Can I Give was a benefit concert led by Michael Jackson held on October 21, 2001