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]. [ http://amigo.geneontology.org/amigo/term/GO:0060482 http://en.wikipedia.org/wiki/Secondary_bronchus ]

This is just here as a test because I lose it

Term information

database cross reference
Subsets

uberon_slim, organ_slim

definition

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].

depicted by

http://upload.wikimedia.org/wikipedia/commons/d/df/Illu_quiz_lung05.jpg

has exact synonym

secondary bronchus

bronchi lobaris

has related synonym

lobar bronchi

secondary bronchi

id

UBERON:0002183

structure notes

They have relatively large lumens that are lined by respiratory epithelium. There is a smooth muscle layer below the epithelium arranged as two ribbons of muscle that spiral in opposite directions. This smooth muscle layer contains seromucous glands. Irregularly arranged plates of hyaline cartilage surround the smooth muscle. These plates give structural support to the bronchus and maintain the patency of the lumen.