NCIt definition : Tubular structure in continuation with the trachea, serving as air passage. It terminates
in the lung (terminal bronchiole).;
Alternative definition : CDISC: Tubular structure in continuation with the trachea, serving as an air passage.; NCI-GLOSS: The large air passages that lead from the trachea (windpipe) to the lungs.; UBERON: The upper conducting airways of the lung; these airways arise from the terminus
of the trachea.;
Codes from synonyms : CDR0000045629; CDR0000046493; 955009;