lobar bronchus

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]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the lobar bronchus is

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]. The atlas records it as a organ at the organ scale in the human body.

Where the lobar bronchus is

It sits in the thorax and trunk, within the respiratory system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the lobar bronchus connects to

The atlas records 15 typed relationships for it, across 4 kinds of connection. part of lobe of lung.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the lobar bronchus. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as bronchi lobaris, secondary bronchus, lobar bronchi and secondary bronchi. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002183, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: lobe of lung.
• A kind of: intrapulmonary bronchus.
• contains: bronchus smooth muscle, bronchus submucosal gland, cartilage of bronchus, epithelium of lobar bronchus, lobar bronchus connective tissue and lobar bronchus mesenchyme, and 3 more.
• subtype: lobar bronchus of left lung lower lobe, lobar bronchus of left lung upper lobe, lobar bronchus of right lung cranial lobe and lobar bronchus of right lung middle lobe.

Questions

Where is the lobar bronchus?

It sits in the thorax and trunk, within the respiratory system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the lobar bronchus connect to?

Part of: lobe of lung.

Is the lobar bronchus the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.