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
Given name names are special given names bestowed upon someone receiving a crown or entering a religious order. Such a person then typically becomes known chiefly by that name. The order "given name – family name", commonly known as the "Western order", is used throughout most European countries and in countries that have cultures predominantly influenced by European culture, including North and South America; North, East, Central and West India; Australia, New Zealand, and the Philippines. The order "family name – given name", commonly known as the "Eastern order", is primarily used in East Asia (for example in China, Japan, Korea, Malaysian