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
What More Can I Give money for charity, the intended purpose. WKTU-FM received numerous telephone calls and emails from listeners following their unauthorized playing of the song, thanking the station and asking where they could buy a copy of "What More Can I Give".<ref name="Michael Jackson's 9/11 Single Hits Radio One Year Late"></ref> "What More Can I Give" was eventually made available as a digital download on October 27, 2003. The websites whatmorecanigive.com and musicforgiving.com sold the song at a price of $2 per download, with a portion of the proceeds from the fee going towards children's charities such as Oneness, Mr. Holland's Opus Foundation