Volume: 55 Issue: 2
Year: 2024, Page: 256-261, Doi: https://doi.org/10.51966/jvas.2024.55.2.256-261
Received: Feb. 23, 2024 Accepted: March 19, 2024 Published: June 30, 2024
The present work was undertaken with the aim to study the histological features of trachea and lung of dog. The lung was collected from six apparently healthy dogs, cut into small pieces, routine histological processing done and images were recorded. Histologically trachea consisted of four tunics namely tunica mucosa, submucosa, fibrocartilaginous layer and serosa. The glands and lymphoid accumulation were not observed in the lamina propria of the mucosa,but some solitary lymphocytes could be observed. The submucosa contained mucous secreting glandular alveoli with clear foamy cytoplasm and spherical to flat nucleus found lying at the basal part of the cells The parenchymatous portions showed intrapulmonary bronchi, tertiary bronchioles and respiratory bronchioles, alveolar ducts, sacs and alveoli. Terminal bronchioles could be well distinguished in the terminal part of the conducting pathway. The respiratory bronchioles were lined by cuboidal epithelium without cilia. The alveolar ducts, alveolar sacs and alveoli were lined by simple squamous epithelium. The alveoli showed type 1 pneumocytes, type 2 pneumocytes and alveolar macrophages.
Keywords: Histology, lungs, trachea, dogs
Alexander, I.G., Ritchie, B.C. and Maloney, J.E. 1971. Scanning electron microscopy of respiratory tissues in the rat. J. Anat. 110: 491-2.
Bosch, W.B., James, A.L. and Tiddens, H.A.W.M. 2021. Structure and function of small airways in asthma patients revisited. Eur Respir Rev. 30: 200186 [https://doi. org/10.1183/ 16000617.0186-2020]
Corkmack, D.H. and Ham, A.W. 1989. Ham’s Histology. 9th Ed. Philadelphia, Lippincott Williams & Wilkins, pp.541- 66.
Dellmann, H.D. and Eurell, J.A. 1998. Textbook of Veterinary Histology. 5th Ed. Baltimore, Lippincott, Williams & Wilkins, 405 p.
Fraser, R.S. 2005. Histology and Gross Anatomy of the Respiratory Tract. In: Hamid, Q.; Shannon, J. and Martin, J. (Eds.). Physiologic Basis of Respiratory Disease. Hamilton (ON), B.C. Decker Inc. pp.1-14
Gartner, L.P. and Hiatt, L.V. 2007. Colour Textbook of Histology. 3rd Ed. Ann Arbor, W. B. Saunders Co. pp.345-65.
Horalskyi, L., Sokulskyi, I., Ragulya, M., Kolesnik, N., and Ordin, Yu. 2023. Morphology, organo- and histometric features of the heart and lungs of a sexually mature domestic dog (Canis Lupus Familiaris L., 1758). Scientific Horizons. 26(12): 9-21. doi: 10.48077/ scihor12.2023.09.
Koptyev, M.M., Pronina, O.M., Danylchenko, S.L., Avetikov, D.S. and Stavitskiy, S,O. 2014. Histologic features of rats’ normal lung tissue. European Inter. J. Sc. Tech. 3: 33-38
Moussa, E. A. and Hassan, S. A. 2015. Histology and scanning electron microscopy of the lower respiratory tract in the adult red fox (Vulpes vulpes). Int. J. Morphol. 33: 267- 274.
Tam, A., Wadsworth, S. and Dorscheid, D. 2011. The airway epithelium: more than just a structural barrier. Ther Adv Respir Dis. 5: 255–273
© 2024 Rajathi. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Rajathi S. 2024. Histological studies on the trachea and lungs in dogs. J. Vet. Anim. Sci. 55(2):256-261
DOI: https://doi.org/10.51966/jvas.2024.55.2.256-261