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Revision as of 13:29, 9 June 2014 by 112.206.38.81 (talk) (→Structure)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Bronchiole | |
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 Diagram of the alveoli with both cross-section and external view. | |
| Details | |
| Identifiers | |
| Latin | Bronchioli |
| MeSH | D055745 |
| TA98 | A06.5.02.026 |
| TA2 | 3282 |
| TH | H3.05.02.0.00005 |
| FMA | 7410 |
| Anatomical terminology[edit on Wikidata] | |
The bronchioles or bronchioli are the passageways by which air passes through the nose or mouth to the alveoli (air sacs) of the lungs, in which branches no longer contain cartilage or glands in their submucosa. They are branches of the bronchi, and are part of the conducting zone of the respiratory system. The bronchioles divide further into smaller terminal bronchioles which are still in the conducting zone and these then divide into the smaller respiratory bronchioles which mark the beginning of the respiratory region.
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Clinical significance
Bronchospasm, a potentially life-threatening situation, occurs when the smooth muscular tissue of the bronchioles constricts, severely narrowing their diameter. The most common cause of this is asthma. Bronchospasm is commonly treated by oxygen therapy and bronchodilators.
Diseases of the bronchioles include asthma, bronchiolitis obliterans, respiratory syncytial virus infections, and influenza.
Inflammation
The medical condition of inflammation of the bronchioles is termed bronchiolitis.
Additional images
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Cross sectional cut of primary bronchiole
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1. Trachea
2. Mainstem bronchus
3. Lobar bronchus
4. Segmental bronchus
5. Bronchiole
6. Alveolar duct
7. Alveolus
References
Further reading
- Saladin, Kenneth S. Anatomy & Physiology: the Unity of Form and Function. New York, NY: McGraw-Hill, 2007.
- Dudek, Ronald W. High-Yield Histology, 3rd ed. (2004). ISBN 0-7817-4763-5
- Gartner, Leslie P. and James L. Hiatt. Color Atlas of Histology, 3rd ed. (2000). ISBN 0-7817-3509-2
- Gartner, Leslie P. and James L. Hiatt. Color Textbook of Histology (2001). ISBN 0-7216-8806-3
External links
- Histology image: 13607loa – Histology Learning System at Boston University
- Template:EMedicineDictionary
- Diagram at davidson.edu
- Histology at umdnj.edu
- Template:EMedicineDictionary
- Histology image: 13606loa – Histology Learning System at Boston University