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
101 Things Removed from the Human Body 101 Things Removed from the Human Body 101 Things Removed from the Human Body and 101 More Things Removed from the Human Body is a British "shockumentary" series directed by Eric Schotz, which is narrated by Mitch Lewis. The program features tales of foreign objects that have been removed from human bodies in the form of a countdown from 101 to 1. Items included are javelins, a boat anchor, a bicycle pump, a bag of nails, an ice pick, and a human body. The documentary series was first broadcast on Sky One in October 2003. When the show was re-broadcast