Keywords : Trachea


Histological and fluorescent microscope studies for evaluation carbon accumulation in trachea and bronchi of birds in polluted area in Wasit province

H. K. Karadi; A. M. Al- badri

Iraqi Journal of Veterinary Sciences, Volume 32, Issue 2, Pages 135-141
DOI: 10.33899/ijvs.2019.153839

The aim of this study was to detect the accumulation of carbon and determination its appearance in different areas of groups of ducks. Using special dyes to detect deposits of carbon particles. Also, using AO/ EB stains to detect early and late (progress) apoptosis that occurred due to the precipitated of carbon in both areas (Al-ahdeb oil field and brick factories areas) but late apoptosis occurred in bronchi of brick factories area more than oil field area. The histological examination of trachea showed no any indicator of accumulation of carbon in three different areas, whereas in bronchi showed the presence of carbon in polluted areas (Al-ahdeb oil field and brick factories areas) in different amounts. 

Comparative anatomical and histological study on the trachea of native awasi sheep and black goat

A. G. Al-Haaik; M. H. Abdul-Raheem

Iraqi Journal of Veterinary Sciences, Volume 20, Issue 1, Pages 9-21
DOI: 10.33899/ijvs.2006.45780

To explore the various constituents of the trachea of the local awasi sheep and black goat, gross anatomical, histological and morphometrical studies had been carried out.
The study revealed that the average length of the trachea is directly proportional to the number of tracheal rings and it was also noticed that the length, diameter and wall thickness of the trachea of the sheep were greater than those of black goat. These parameters decreased gradually toward the posterior third of the trachea in both species. The free dorsal ends of the tracheal rings of the sheep overlapping each other at the cranial third, but they gradually move a part at the mid – third, and they become again very close to each other and run side to side dorsally to forming a dorsal crest at the caudal third. However, the two free ends of tracheal rings of the goat remain considerably apart throughout the entire length of the trachea forming a (U) shaped configuration. The cartilaginous rings were so oriented that they disposed one beside the other at the ventral and lateral aspects of the tracheal wall. But they overlapping each other at the dorso – lateral aspect of the tracheal wall in both species. Three main cells were detected in the surface epithelium of the trachea of both species (ciliated columnar cells, basal cells and goblet cells), another cell type was restricted to the posterior third of the trachea of both species. The tracheal glands were found to be compound, mixed tubulo – acinar type. The majority of the secretory units were mucous, the others were serous. Most of the tracheal glands occupied the triangular area between the successive tracheal rings particularly at the medial side of the ventral aspect of the trachea. The density of the tracheal glands decreased gradually anterio – coudally in the both studied species. The percentage of goblet cells in the trachea of sheep was greater than that of goat, and decreased gradually toward the lungs in both species.

Comparative carbohydrate histochemical study of the trachea of native sheep and goat

M. H. Abdul-Raheem; A. G. Al-Haaik

Iraqi Journal of Veterinary Sciences, Volume 20, Issue 1, Pages 23-37
DOI: 10.33899/ijvs.2006.45781

The aim of this work was to explore the different types of carbohydrates histochemically in the trachea of local Awase sheep and to compare it with that of the local black goat. Ten tracheas from each sheep and goat were used for this study. Different histochemical methods were used to explore types and locations of carbohydrates in trachea’s wall of both animals. It was observed that the amount of mucus secreted from the anterior third of trachea was comparatively greater than that of the middle and posterior thirds due to its higher content of
tracheal glands and goblet cells. The carbohydrate histochemistry of different constituents of the trachea showed that there was no noticeable difference between the two studied species. However, the glycogen was found in a greater amount in goat's trachea in comparison to sheep. The goblet cells and the mucous secretory units of the trachea showed a considerable amount of carboxylated glycoprotein together with a little amount of other forms of carbohydrates. The mucus that covers the lumen of the trachea contained almost all the carbohydrate substances with the exception of neutral glycoproteins. Chondrocytes contain glycogen, sulphated and neutral glycoproteins but didn't show any form of GAGs, whereas, the territorial matrix of the cartilage contains a mixture of carboxylated and sulphated GAGs with the predominance of the latter, but glycoproteins could not be detected. The interterritorial matrix contained mainly carboxylated glycosaminoglycans together with a little amount of glycoproteins. The columnar cells and the basal surface epithelial cells showed no reaction to any form of carbohydrates.