part_of part of part of results in development of anatomical structure development trachea development trachea submucosa development 2010-06-07T09:58:40Z biological_process GO:0061152 The progression of the trachea submucosa over time from its formation to the mature structure. The trachea submucosa is made up of the glands and elastic tissue that lie under the mucosa in the trachea. submucosa of trachea