Anatomical investigations of the syrinx (Voice Box)‎ of the adult male west African guinea fowl (Numida meleagris galeata)‎ in the al-Najaf al-Ashraf province

الملخص EN

Morphological examination of the syrinx in male West African guinea fowl (WAGF) at the second year of their age and (1244±114 g) the mean live weight which collected randomly from centre of the AL-Najaf AL-Ashraf province for making use this study in the future studies of the physiology of system and histopathological study of respiratory disease.

After bird preparation, the syrinx was identified, then, position, shape and related of syrinx with other thoracic organs of specimen was recorded.

The cartilages were the main the building units of the syrinx that the hyaline type (three tracheosyringeal cartilages, two the intermediate cartilages, three bronchosyringeal cartilages and pessulus).

Therefore classified as tracheabronchial type.

The tracheosyringeal cartilages was ring-like shape, and intermediate cartilages and bronchosyringeal were (C) shape, while pessulus was wedge-shape and divided the syringeal cavum in two primary bronchi.

pessulus partial ossified.

Addition to that there were paired lateral vibrating membranes which attached with the last tracheosyringeal cartilage and first intermediate cartilages craniocaudally and medial vibrating membranes which restricted between pessulus cranially and third bronchosyringeal cartilage caudally and continued as medial bronchial walls.

The interbronchial ligament connects the left and right primary bronchi at the terminal part of the medial vibrating membranes.