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The present study was carried out to investigate the histomorphological features of the turkey's pharyngeal roof using light and scanning electron microscopy. Studied parts from the roof of the turkey's pharynx were processed and stained by convential stains to illustrate the mucosa, salivary glands, and connective tissue infiltration. Also, Scanning electron investigations were applied on pharyngeal papillae and pharyngeoseophageal junction. Grossly, the pharyngeal roof was shown to constitute about 12.27% of the oropharyngeal roof length, continue rostrally with the oral roof at the level located between the choanal and infundibular slits, and terminate caudally at the pharyngeoesophageal junction, demarcated by a transverse row of caudally directed conical papillae. Numerous different sized and shaped caudally directed pharyngeal papillae were distributed in the roof of the pharynx. Histologically, the pharyngeal mucosa demonstrated pharyngeal folds, intraepithelial mucous glands, abundant lymphoid infiltration and lymphatic nodules, in addition to intraepithelial sensory corpuscles. Numerous compound tubular mucous sphenopterygoid salivary glands were observed in the mucosa of the pharyngeal roof. This study in conclusion provided comprehensive information on the structure of the pharyngeal roof of the turkey, comparing these findings with those of other birds.

The present study was carried out to investigate the histomorphological features of the turkey's pharyngeal roof using light and scanning electron microscopy. Studied parts from the roof of the turkey's pharynx were processed and stained by convential stains to illustrate the mucosa, salivary glands, and connective tissue infiltration. Also, Scanning electron investigations were applied on pharyngeal papillae and pharyngeoseophageal junction. Grossly, the pharyngeal roof was shown to constitute about 12.27% of the oropharyngeal roof length, continue rostrally with the oral roof at the level located between the choanal and infundibular slits, and terminate caudally at the pharyngeoesophageal junction, demarcated by a transverse row of caudally directed conical papillae. Numerous different sized and shaped caudally directed pharyngeal papillae were distributed in the roof of the pharynx. Histologically, the pharyngeal mucosa demonstrated pharyngeal folds, intraepithelial mucous glands, abundant lymphoid infiltration and lymphatic nodules, in addition to intraepithelial sensory corpuscles. Numerous compound tubular mucous sphenopterygoid salivary glands were observed in the mucosa of the pharyngeal roof. This study in conclusion provided comprehensive information on the structure of the pharyngeal roof of the turkey, comparing these findings with those of other birds.

The present study was carried out to investigate the histomorphological features of the turkey's pharyngeal roof using light and scanning electron microscopy. Studied parts from the roof of the turkey's pharynx were processed and stained by convential stains to illustrate the mucosa, salivary glands, and connective tissue infiltration. Also, Scanning electron investigations were applied on pharyngeal papillae and pharyngeoseophageal junction. Grossly, the pharyngeal roof was shown to constitute about 12.27% of the oropharyngeal roof length, continue rostrally with the oral roof at the level located between the choanal and infundibular slits, and terminate caudally at the pharyngeoesophageal junction, demarcated by a transverse row of caudally directed conical papillae. Numerous different sized and shaped caudally directed pharyngeal papillae were distributed in the roof of the pharynx. Histologically, the pharyngeal mucosa demonstrated pharyngeal folds, intraepithelial mucous glands, abundant lymphoid infiltration and lymphatic nodules, in addition to intraepithelial sensory corpuscles. Numerous compound tubular mucous sphenopterygoid salivary glands were observed in the mucosa of the pharyngeal roof. This study in conclusion provided comprehensive information on the structure of the pharyngeal roof of the turkey, comparing these findings with those of other birds.

This work was carried out to describe the morphological characteristics of the choanal slit of the turkey through gross, light, and scanning electron microscopy. The choanal slit measures 27.62 mm long, and constitutes 38.30 % of the total length of the palate. The edges of the narrow part of the choanal slit is smooth rostrally but slightly thickened caudally due to the presence of 2-3 small papillae. The edge of the wide part is thickened because of presence of 5-7 conical and wedge shaped papillae. SEM indicates the presence of median fold within the choana, which represents the direct continuation of the median palatine ridge. After a short distance, this fold bifurcates into right and left folds. Several openings of the palatine salivary glands are demonstrated on the palate at the level of the choanal slit. The epithelium of the oral roof at the level of the choanal slit is stratified squamous epithelium showing intraepithelial sensory corpuscles. This epithelium transforms at the edge of the choanal slit into pseudostratified ciliated columnar epithelium that interrupted by intraepithelial mucous glands surrounded by lymphatic infiltration and nodules. Altogether, this study provides inclusive information on the macroscopic and microscopic morphological features of the choana in the turkey in comparing with those of the other birds.

This work was carried out to describe the morphological characteristics of the choanal slit of the turkey through gross, light, and scanning electron microscopy. The choanal slit measures 27.62 mm long, and constitutes 38.30 % of the total length of the palate. The edges of the narrow part of the choanal slit is smooth rostrally but slightly thickened caudally due to the presence of 2-3 small papillae. The edge of the wide part is thickened because of presence of 5-7 conical and wedge shaped papillae. SEM indicates the presence of median fold within the choana, which represents the direct continuation of the median palatine ridge. After a short distance, this fold bifurcates into right and left folds. Several openings of the palatine salivary glands are demonstrated on the palate at the level of the choanal slit. The epithelium of the oral roof at the level of the choanal slit is stratified squamous epithelium showing intraepithelial sensory corpuscles. This epithelium transforms at the edge of the choanal slit into pseudostratified ciliated columnar epithelium that interrupted by intraepithelial mucous glands surrounded by lymphatic infiltration and nodules. Altogether, this study provides inclusive information on the macroscopic and microscopic morphological features of the choana in the turkey in comparing with those of the other birds.

This work was carried out to describe the morphological characteristics of the choanal slit of the turkey through gross, light, and scanning electron microscopy. The choanal slit measures 27.62 mm long, and constitutes 38.30 % of the total length of the palate. The edges of the narrow part of the choanal slit is smooth rostrally but slightly thickened caudally due to the presence of 2-3 small papillae. The edge of the wide part is thickened because of presence of 5-7 conical and wedge shaped papillae. SEM indicates the presence of median fold within the choana, which represents the direct continuation of the median palatine ridge. After a short distance, this fold bifurcates into right and left folds. Several openings of the palatine salivary glands are demonstrated on the palate at the level of the choanal slit. The epithelium of the oral roof at the level of the choanal slit is stratified squamous epithelium showing intraepithelial sensory corpuscles. This epithelium transforms at the edge of the choanal slit into pseudostratified ciliated columnar epithelium that interrupted by intraepithelial mucous glands surrounded by lymphatic infiltration and nodules. Altogether, this study provides inclusive information on the macroscopic and microscopic morphological features of the choana in the turkey in comparing with those of the other birds.

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