File:Respiratory histology 06.jpg

From Embryology

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Respiratory Trachea - Glands

Mucosa - formed by epithelium and underlying lamina propria.

  • respiratory epithelium - (pseudostratified columnar and ciliated) ciliated cells, goblet cells, brush cells, endocrine cells, surfactant-producing cells (Clara cells), serous cells, basal cells, basement membrane.
  • lamina propria - loose connective tissue, many elastic fibres

Submucosa - connective tissue and submucosal glands

Submucosal Glands

(muco-serous) serous (dark) and mucous (light) parts have different staining appearance.

  • Mucous secretions - "slimy" (high viscosity) mucous acini cells appear "foamy" or "frothy" and poorly stained (light). nuclei dark and smaller than serous.
  • Serous secretions - "watery" (low viscosity) serous acini cell apical cytoplasm is usually well-stained (dark). nuclei round to ovoid located in cell basal cytoplasm.


  • perichondrium - surface of cartilage.
  • tracheal cartilage - hyaline cartilage, 16 to 20 C-shaped cartilages.
  • trachealis muscle - (smooth muscle) Not visible in this section, together with connective tissue fibres, join ends of the cartilages together.

Trachea Histology Links: Overview HE | Overview VG | Detail 1 HE Detail 2 HE | Respiratory Histology | Histology Stains | Histology

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 13) Embryology Respiratory histology 06.jpg. Retrieved from

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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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current19:54, 27 February 2012Thumbnail for version as of 19:54, 27 February 2012450 × 600 (95 KB)Z8600021 (talk | contribs)
15:59, 2 March 2011Thumbnail for version as of 15:59, 2 March 2011300 × 400 (56 KB)S8600021 (talk | contribs)==Respiratory Trachea== Respiratory histology 06.jpg Original file name: Tra12he.jpg {{Template:Blue Histology}} Category:Respiratory