Term Name:	regulation of tube diameter, open tracheal system
Synonyms:	regulation of tracheal tube diameter, tracheal tube dilation, tracheal tube expansion
Definition:	Ensuring that a tube in an open tracheal system is of the correct diameter. When primary branches form their lumens are small (less than 2 micrometers) in caliber and must undergo regulated expansion during larval life to reach their mature size.
Ontology:	GO: Biological Process [GO:0035158]    QuickGO    AmiGO