tube respiratory tube EMAPA:37946 segment of tracheobronchial tree A tube in the respiratory system. Examples: bronchus, bronchiole, trachea. FMA:12224 in GO lung development is part of respiratory tube development. This can lead to inconsistencies with other ontologies, e.g. VT. The GO structure may be better represented by a tree of tubes (see the FMA class) UBERON:0000117 uberon segment of tracheobronchial tree airway respiratory conducting tube tracheobronchial tree segment endoderm-derived structure