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
Papal name used by one or more legitimate popes (e.g. Benedict X was later reckoned as antipope). Immediately after a new pope is elected, and accepts the election, he is asked in Latin "By what name shall you be called?"† The new pope chooses the name by which he will be known from that point on. The senior Cardinal Deacon, or Cardinal Protodeacon, then appears on the balcony of Saint Peter's to proclaim the new pope by his birth name, and announce his papal name: <poem> Annuntio vobis gaudium magnum: Habemus Papam! Eminentissimum ac reverendissimum dominum, dominum [baptismal name], Sanctæ Romanæ Ecclesiæ