bronchiole

The conducting airway of the lungs found terminal to the bronchi; these structures contain neither cartilage nor mucous-secreting glands; the epithelium of the bronchioles becomes thinner with each branching. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the bronchiole is

The conducting airway of the lungs found terminal to the bronchi; these structures contain neither cartilage nor mucous-secreting glands; the epithelium of the bronchioles becomes thinner with each branching. The atlas records it as a organ at the organ scale in the human body.

Where the bronchiole is

It sits in the thorax and trunk, within the respiratory system. Positioned deliberately as part of this species body plan.

What the bronchiole connects to

The atlas records 15 typed relationships for it, across 7 kinds of connection. part of lung and tracheobronchial tree.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the bronchiole. 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 bronchioli and bronchiolus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002186, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: lung and tracheobronchial tree.
• A kind of: respiratory tube.
• contains: epithelium of bronchiole, mucosa of bronchiole, smooth muscle tissue of bronchiole and submucosa of bronchiole.
• subtype: lobular bronchiole, primary bronchiole, respiratory bronchiole and terminal bronchiole.
• flows to: respiratory bronchiole and bronchus.
• branching part of: tracheobronchial tree.
• contributes to morphology of: epithelium of bronchiole.

Questions

Where is the bronchiole?

It sits in the thorax and trunk, within the respiratory system. Positioned deliberately as part of this species body plan.

What does the bronchiole connect to?

Part of: lung and tracheobronchial tree.

Is the bronchiole 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.