Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species

Sozan A. Ali; Asmaa A. Saker; Hassan Emam; Shafika A. Elsayed

doi:10.5455/ajvs.214831

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Original Article

AJVS. 2024; 83(0): 5-18

doi: 10.5455/ajvs.214831

Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species

Sozan A. Ali, Asmaa A. Saker, Hassan Emam, Shafika A. Elsayed.

Abstract
This study aimed to explain and compare the anatomical, histological, histochemical & histomorphometric analyses of the syrinx in different species of birds. This study includes 21 healthy birds from geese (Anser Anser Domesticus), cattle egrets (Bublucus ibis) & house sparrows (Passer domesticus), seven from each species. Results: Anatomically, the syrinx of the three studied species was tracheobronchial type composed of 2 different cartilaginous groups arranged in three parts: Tracheo-Syringeal cartilage in (cranial, intermediate part (tympanum)) and broncho-syringeal cartilage; as well as the trachea's muscles were once thought to be the syrinx's extrinsic muscles. Histologically, the lamina epithelialis of the Tracheo-Syringeal part was represented by pseudostratified ciliated columnar epithelium in the three investigated species with goblet cells in geese, house sparrows and lack goblet cells in cattle egrets. The pessulus in all three investigated species was triangular and positioned at the tip of the tracheal bifurcation. The bulla of house sparrow was considered the intrinsic syringeal muscles and these muscles in sparrows are not only present in geese or cattle egrets.

Key words: KEYWORDS: Macro- Micro-morphological, syrinx.

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How to Cite this Article

Pubmed Style

Ali SA, Saker AA, Emam H, Elsayed SA. Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. AJVS. 2024; 83(0): 5-18. doi:10.5455/ajvs.214831

Web Style

Ali SA, Saker AA, Emam H, Elsayed SA. Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. https://www.alexjvs.com/?mno=214831 [Access: May 04, 2025]. doi:10.5455/ajvs.214831

AMA (American Medical Association) Style

Ali SA, Saker AA, Emam H, Elsayed SA. Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. AJVS. 2024; 83(0): 5-18. doi:10.5455/ajvs.214831

Vancouver/ICMJE Style

Ali SA, Saker AA, Emam H, Elsayed SA. Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. AJVS. (2024), [cited May 04, 2025]; 83(0): 5-18. doi:10.5455/ajvs.214831

Harvard Style

Ali, S. A., Saker, . A. A., Emam, . H. & Elsayed, . S. A. (2024) Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. AJVS, 83 (0), 5-18. doi:10.5455/ajvs.214831

Turabian Style

Ali, Sozan A., Asmaa A. Saker, Hassan Emam, and Shafika A. Elsayed. 2024. Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. Alexandria Journal of Veterinary Sciences, 83 (0), 5-18. doi:10.5455/ajvs.214831

Chicago Style

Ali, Sozan A., Asmaa A. Saker, Hassan Emam, and Shafika A. Elsayed. "Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species." Alexandria Journal of Veterinary Sciences 83 (2024), 5-18. doi:10.5455/ajvs.214831

MLA (The Modern Language Association) Style

APA (American Psychological Association) Style

Ali, S. A., Saker, . A. A., Emam, . H. & Elsayed, . S. A. (2024) Comparative Macro- and Micro-morphological Study on the Syrinx of Three Avian Species. Alexandria Journal of Veterinary Sciences, 83 (0), 5-18. doi:10.5455/ajvs.214831

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