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
What Is Life the Harrison YouTube channel and other media platforms. A live version of the song, recorded with Eric Clapton and his band in December 1991, is available on Harrison's 1992 album "Live in Japan" album. The performance was recorded at Tokyo Dome on 17 December, during the final show of the tour. Part of a concert performance of "What Is Life" from Harrison's 1974 North American tour with Shankar is included in Scorsese's "George Harrison: Living in the Material World". While challenging the commonly held view that this controversial 1974 tour was a "disaster", Simon Leng writes of a Fort Worth