Trachea annular ligaments of trachea. The epiglottis closes the opening to the larynx during swallowing. The trachea develops in the second month of development. It is lined with an epithelium that has goblet cells which produce protective mucins (see "Respiratory epithelium"). An inflammatory condition, also involving the larynx and bronchi, called croup can result in a barking cough. A tracheotomy is often performed for ventilation in surgical operations where needed. Intubation is also carried out for the same reason by the inserting of a tube into the trachea. From 2008, operations have experimentally transplanted a windpipe grown by stem cells, and
Name day names in the Czech Republic gained slightly more importance than the others. For example, the dates associated with names Josef (Joseph) and Karel (Charles) are commonly known even by people with different names. However, the popularity of these names has decreased in the last years (6836 Josefs were born in 1947, but only 638 in 2014). Danes have their own calendar for name days (Danish 'navnedag'), see . However, the custom of celebrating one's name day is practically unknown in Denmark, and few Danes know when their name day is. Finnish Name Days Finns celebrate their name days (Finnish "nimipäivä",