What are bronchioles?
It is called the bronchioles. Gray's Anatomy (1918) describes it as the smallest air-conducting tubes of the lung.
What it is
- The smallest air-conducting tubes of the lung.
- Less than 1 mm across.
- Their walls contain smooth muscle but no cartilage.
Where it is
- Inside the lungs, beyond the smallest bronchi.
- End in the terminal bronchioles, which lead to the alveoli.
- Distributed throughout every part of the lung.
Source:
Last verified: 2026-07-18
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