Respiratory bronchiole
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| Respiratory bronchiole | |
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| Diagram of the alveoli with both cross-section and external view. | |
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| Schematic longitudinal section of a primary lobule of the lung (anatomical unit); r. b respiratory bronchiole; al. d alveolar duct; at atria; a. s alveolar sac; 'a' alveolus or air cell; p. a.: pulmonary artery; p. v pulmonary vein; l lymphatic; l. n lymph node. | |
| Latin | bronchioli respiratorii |
| Gray's | subject #240 1098 |
| Dorlands/Elsevier | b_23/12197629 |
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The respiratory bronchioles are the beginning of the respiratory segment of the airway and are just distal to the terminal bronchioles (which are the last segment of the conducting airway). The epithelium in this segment is simple cuboidal. The respiratory bronchioles are interrupted by alveoli which are thin walled evaginations. Alveolar ducts are distal continuations of the respiratory bronchioles.
Additional images
 Part of a secondary lobule from the depth of a human lung, showing parts of several primary lobules. |
External links
- Diagram at davidson.edu
- Respiratory+bronchioles at eMedicine Dictionary
- Histology at Boston University 13606loa
- Histology at umdnj.edu
Anatomy of torso, respiratory system: Lungs and related structures | |
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| lungs | right • left • lingula • apex • base • root • cardiac notch • cardiac impression • hilum • borders (anterior, posterior, inferior) • surfaces (costal, mediastinal, diaphragmatic) • fissures (oblique, horizontal) |
| conducting zone | trachea (tracheal rings, carina) • bronchi • main bronchus (right, left) • lobar/secondary bronchi (eparterial bronchus) • segmental/tertiary bronchi (bronchopulmonary segment) • bronchiole • terminal bronchiole |
| respiratory zone | respiratory bronchiole • alveolar duct • alveolus • alveolar-capillary barrier |
| pleurae | parietal pleura (cervical, costal, mediastinal, diaphragmatic) • visceral pleura • pulmonary ligament • recesses (costomediastinal, costodiaphragmatic) • pleural cavity |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
