Trachea synthetic windpipes; however, a successful method for this method of transplant does not currently exist and development of such a method remains theoretically daunting. The word "trachea" is used to define a very different organ in invertebrates than in vertebrates. Insects have an open respiratory system made up of spiracles, tracheae, and tracheoles to transport metabolic gases to and from tissues. An adult's trachea has an inner diameter of about and a length of about 10 to 11 centimetres (4 in.). It begins at the bottom of the larynx, and ends at the carina, the point where the trachea branches
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",