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
Uma (given name) Uma (given name) Uma is a given name in various cultures. In India, it is the name of the Hindu goddess, who is more commonly known as Parvati. In Sanskrit the word "" can further mean "tranquillity", "splendour", "fame" and "night". In Hebrew and Aramaic its meaning is "nation". It is also used by the Tiv people of Cameroon and Nigeria where the meaning in the Tiv language is "life". The name Uma is also popular in the Otukpo subgroup of the Idoma people of Nigeria and the meaning in the Idoma language is "to shine". Uma in Balinese means