Microscopic Anatomy of the Ringed Seal ( Phoca hispida ) Lower Respiratory Tract
Summary The microscopic anatomy of the ringed seal lung exhibits unique features and many features similar to those described in other seal species. Unique features include: Trachealis muscle predominately oriented longitudinally; Large veins within the tracheal wall supported by elastic fibers; Gob...
| Published in: | Anatomia, Histologia, Embryologia: Journal of Veterinary Medicine Series C |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2005
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1439-0264.2005.00635.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1439-0264.2005.00635.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1439-0264.2005.00635.x |
| Summary: | Summary The microscopic anatomy of the ringed seal lung exhibits unique features and many features similar to those described in other seal species. Unique features include: Trachealis muscle predominately oriented longitudinally; Large veins within the tracheal wall supported by elastic fibers; Goblet cells and pseudostratified epithelium lining the duct system of bronchial glands of the segmental bronchi; Lamina propria of the segmental bronchus heavily invested with elastic fibers clustered into dense longitudinal bundles; and Capillaries and venules covered with squamous epithelium protruding into bronchiolar lumina. Common features include: Cartilage support of the bronchial tree extending distally into respiratory bronchioles; Smooth muscle enhancements in the distal airways producing sphincter like formations; and Lungs extensively supported with interstitial tissue, which divide lungs into lobules. |
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