This article may require cleanup to meet Wikipedia's quality standards. Please improve this article if you can. (February 2008)

Respiratory bronchiole
Diagram of the alveoli with both cross-section and external view.
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

The respiratory bronchioles are interrupted by alveoli which are thin walled evaginations. Alveolar ducts are distal continuations of the respiratory bronchioles.

[edit] Additional images

Part of a secondary lobule from the depth of a human lung, showing parts of several primary lobules.

into the air passage way

[edit] External links

• Diagram at davidson.edu
• Respiratory+bronchioles at eMedicine Dictionary
• Histology at BU 13606loa

v • d • e Anatomy: lower respiratory system (TA A06.3-5, GA 11.1084) Lower RT Trachea Tracheal rings · Annular ligaments of trachea · Carina Lungs Surface right/left · apex/base/root/hilum · cardiac impression/cardiac notch/lingula borders (anterior, posterior, inferior) surfaces (costal, mediastinal, diaphragmatic) fissures (oblique, horizontal) Airway Conducting zone 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 respiratory system navs: anat nose,larynx/lower+thoracic cavity/physio/dev, noncongen/congen/tumors, symptoms+signs/eponymous, proc

This respiratory system article is a stub. You can help Wikipedia by expanding it. v • d • e