main bronchus

One of two branches of the trachea. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the main bronchus is

One of two branches of the trachea. The atlas records it as a organ at the organ scale in the human body.

Where the main bronchus is

It sits within the respiratory system. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What the main bronchus connects to

The atlas records 12 typed relationships for it, across 4 kinds of connection. a kind of bronchus.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the main 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 bronchus principalis, extrapulmonary bronchus, mainstem bronchus, major bronchus, primary bronchus and principal bronchus, and 1 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002182, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• A kind of: bronchus.
• contains: cartilage of main bronchus, epithelium of main bronchus, lumen of primary bronchus, main bronchus connective tissue, main bronchus smooth muscle and mucosa of main bronchus, and 1 more.
• connects: bifurcation of trachea and carina of trachea.
• subtype: left main bronchus and right main bronchus.

Questions

Where is the main bronchus?

It sits within the respiratory system. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What does the main bronchus connect to?

A kind of: bronchus.

Is the main 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.