Uberon definition : the upper conducting airways of the lung; these airways arise from the terminus of
the trachea;
Uberon synonym : bronchi; bronchial trunk;
Uberon related term : bronchial tissue;
Uberon Taxon note : In humans, the main bronchus is histologically identical to trachea; 2ary and 3ary
bronchi are not; epithelium becomes simple columnar, goblet cell number decreases,
elastic fibers in lamina propria increases, distribution more uniform. Muscular layer
between mucosa and submucosa appears. cartilage rings become discontinuous plates
connected by fibrous connective tissue;