Vol. 11, Special Issue 8 (2022)

Author(s):
Manoj Kumar Sinha, Avnish Kumar Gautam, Deepak Kumar, Vijay Kumar and Nayanika Ray

Abstract:
A study was conducted on gross anatomical studies of lungs in black Bengal goat and Garole sheep. The bronchi were lined by psudostratified ciliated columnar epithelium. Goblet cells, basal cells, and migratory cells were identified in different order of bronchus but the number of goblet cells decreased from primary to tertiary. The height of the epithelium also decreased gradually from primary to tertiary. Similarly the thickness of the propria and submucosa also progressively decrease. The propria and submucosa contained mixed submucosal gland in case of the sheep but no gland was found in case of goat. The frequency of the bronchial gland gradually diminished in case of sheep. The hyaline cartilage appeared in the form of regular plate in case of both the species in primary bronchus. In first order of bronchiole simple ciliated columnar epithelium was found and in the second order the lining epithelium was simple cuboidal. Besides the epithelial cells calara cells were also identified in both the species. Respiratory bronchiole was identified infrequently in the initial part of the lung in the form of out pocketing walls. The alveolar wall was lined by simple squamous epithelium. Two types of alveolar pnumocytes were identified 1) membranous pnumocytes (type-1 pnumocytes) 2) granularpnumocytes (type-2 pnumocytes) in both species.