File:Respiratory histology 01.jpg

From Embryology

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Respiratory Bronchiole

Branching

main bronchi -> lobar bronchi -> segmental bronchi (supply lung bronchopulmonary segments) -> bronchi -> bronchioles (smaller than 1 mm) -> respiratory bronchioles.

Bronchi

  • Trachea branches into 2 main bronchi, with a histological structure similar to that of the trachea.
  • branches are accompanied by branches of the pulmonary artery, nerves and lymph vessels
  • surrounded by a layer of smooth muscle, which is located between the cartilage and epithelium.

Bronchioles

  • transition from bronchi to bronchioles the epithelium changes to a ciliated columnar epithelium.
  • Smooth muscle present, glands and cartilage are absent.

Respiratory Bronchioles

  • first structures that belong to the respiratory portion of the respiratory system.
  • wall out-pouchings form alveoli (site of gas exchange)
  • end in alveolar ducts
  • alveoli - duct or sac.


Respiratory Histology: Bronchiole | Alveolar Duct | Alveoli | EM Alveoli septum | Alveoli Elastin | Trachea 1 | Trachea 2 | labeled lung | unlabeled lung | Respiratory Bronchiole | Lung Reticular Fibres | Nasal Inferior Concha | Nasal Respiratory Epithelium | Olfactory Region overview | Olfactory Region Epithelium | Histology Stains




Links: Histology | Histology Stains | Blue Histology images copyright Lutz Slomianka 1998-2009. The literary and artistic works on the original Blue Histology website may be reproduced, adapted, published and distributed for non-commercial purposes. See also the page Histology Stains.


Cite this page: Hill, M.A. (2024, June 21) Embryology Respiratory histology 01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Respiratory_histology_01.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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15:45, 2 March 2011Thumbnail for version as of 15:45, 2 March 2011300 × 400 (56 KB)S8600021 (talk | contribs)==Respiratory Bronchiole== Respiratory histology 01.jpg Original file name: Lun12he.jpg {{Template:Blue Histology}} Category:Respiratory