part of part of has part has part has_part distally connected to system lobe of lung cartilage of bronchus lobar bronchus MA:0000437 EHDAA:8225 EHDAA:8203 EHDAA:4985 EHDAA:4963 SCTID:245509008 secondary bronchus EHDAA:8187 Wikipedia:Secondary_bronchus FMA:7406 EHDAA:4993 EHDAA:8213 EHDAA:8175 UBERON:0002183 NCIT:C32998 EMAPA:32696 The lobar bronchus is the major airway within the respiratory tree that starts by division of the principal bronchi on both sides and ends at the point of its own subdivision into tertiary or segmental bronchi[GO]. EHDAA:4955 EHDAA:4977 segmental bronchus bronchus smooth muscle intrapulmonary bronchus bronchus submucosal gland