Mirror of Research in Veterinary Sciences and Animals (Jul 2016)
Morphological, Histological and Histochemical Study of trachea of One Hump Camel (Camelus dromedaries) In South of Iraq
Abstract
The objective of this study was to describe the morphological, histological and histochemical structural features of the trachea of the camel (Camelus. dromedaries) Tracheas from 10 adult male camels aged between 3-5 years were collected from slaughter house in Al- samawa and Al- zubair distract. This study were performed at college of veterinary medicine / university of Basra. Clinically, all camels were appeared normal and healthy. The length, and the number of tracheal cartilage rings were measured and processed for histological study. The morphological study revealed that the mean length of the trachea was 95 ± 0.77 cm, while the mean number of the cartilage rings was 75.6 ± 0.74. The histological results revealed that the wall of trachea consist of mucosa, submucosa, hyaline cartilage and adventitia. The mucosa was lined by respiratory epithelium (pseudostratified ciliated columnar epithelium) with numerous goblet and basal cells, while the lamina propria was consisted of loose connective tissue. Muscularis mucosa was very thin layer, while the submucosa appeared as a layer of loose connective tissue and contained tubulo - acinar submucosal glands, which were very few in number and small in size. The hyaline cartilage layer was surrounded by perichondriun with the dense fibroblastic tissue presented between the cartilaginous rings. The adventitia was consisted of connective tissue with numerous elastic fibers. On the other hand the Periodic acid–Schiff stain (PAS) showed a positive reaction of gobblet cells and submucosl gland.
