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Abstract
The present study, conducted on the larynx of five adult Yankasa sheep of local breed, aimed at exploring its basic anatomy and histological features. The larynx consists of four cartilages; the unpaired epiglottis rostroventral, unpaired thyroid ventrally, dorsal paired arytenoid, and caudal unpaired cricoid. These cartilages presented distinct morphological features and were connected to each other by ligaments. The intrinsic laryngeal muscles include; the dorsal cricoarytenoid and transverse arytenoid muscles. The lateral cricoarytenoid was concealed by the thyroid laminae. The ventrally located thyroarytenoid and cricothyroid muscles. The laryngeal cavity comprised of rostral vestibule, a narrow middle glottic cleft and a wide infraglottic cavity caudally. Histologically, the epiglottis was lined by stratified squamous keratinized epithelium, the thyroid cartilage was lined by pseudostratified columnar epithelium, whereas the arytenoid cartilage was lined by pseudostratified columnar ciliated epithelium with goblet cells. The loose irregular loose connective tissue of the propria submucosa comprised of connective tissue cells mainly fibroblast, and fine blood capillaries, whereas the deeper part presented glandular tissues, ducts, fat cells and cartilages. It is envisaged that the study has provided basic information on gross and histological feature of the larynx in the Yankasa sheep.
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References
- Badawy, A.M. (2005). Experimental studies on laryngeal hemiplegia in equine with special reference to surgical affections of nearby structures. Ph.D., Zagazig University, Faculty of Veterinary Medicine, Moshtohor, Egypt.
- Baltoo, A., Rajput, R., Pathak, V. and Vij, S. (2018).Gross anatomical parameter of extrapulmonary respiratory system of Gaddi Goat. Indian Journal of Veterinary Anatomy, 30 (2): 97-99.
- Casteleyn, C., Simoens, P. and Broeck V.W. 2008. Larynx associated lymphoid tissue (LALT) in young cattle. Veterinary Immunology and Immunopathology, 124:394-439. http://dx.doi:10.1016/j.vetimm.2008.04.008.x
- Dyce, K.M., Sock, W.O. and Wensing, C.S.G. (2010). Textbook of Veterinary anatomy 4th ed. W.B sounders company Philadelphia. ISBN 978-1-4160-6607-1. Pp 152-156.
- Erdogan, S. and Perez, W. (2013). Anatomical characteristics of the larynx in giraffe (Giraffa camelo pardalis). Journal of Morphological Science, 30: 266-271.
- Eshra, E.A., Metwally, M.A., Hussieni, H.B. and Kassab, A.A. (2016). Comparative anatomical and histological studies on the laryngeal cartilages of buffaloes, camels and donkeys. Journal of Advanced Veterinary Research, 6: 27-36. http://advetresearch.com/index.php/avr/index.
- Eurell, J.A. and Frappier, B.L (2006). Dellmann’s textbook of veterinary histology, 6th ed. Blackwell Publishing, Wiley India PVT. Ltd., New Delhi. ISBN: 978-81-265-4187-4.
- Konig, H.A. and Liebich, H. (2004). Textbook and color atlas of veterinary anatomy of domestic mammals. SchattauerGmBH, HÖlderlinstraBe 3, D-70174 Stuttgart, Germany. ISBN: 3-7945-2101-3. http://www.schattauer.de
- Luna, L.G. (1968). Manual of Histologic Staining Methods of Armed Forces Institute of Pathology. 3rd ed., McGraw Hill Book Co., New York
- Metwally, M.A., Hussieni, H.B., Kassab, A.A. and Eshrah, E.A. (2018). Some comparative anatomical studies on the laryngeal muscles and cavity of buffaloes, camels and donkeys. Journal of Advanced Veterinary Research, 8(3): 32-37. http://advetresearch.com/index.php/avr/index.
- Nickel, R., Schummer, A. and Seiferle, E. (1979). The viscera of the domestic mammals 2nd revised ed. Verlag Paul Parey. Berlin, Hamburg. 211-281.
- Parkash, T. and Kumar, P. (2019). Histolomorphological and histochemical studies on larynx of Pigs. Indian Journal of Veterinary Anatomy, 31 (1): 138-140.
- Parkash, T. and Kumar, P. (2021). Gross and scanning electron microscopic studies in the larynx of Pigs. Haryana Veterinarian, 60(1): 100-103.
- Rajani, C.V., Surjith, K.P, Patki, H.S., Jitha, K.R., Binsha, K.M., Abdul Azeez, George Chandy, and Ashok, N. (2019).Comparative morphology of the larynx, trachea and lungs of Asian elephant (Elephas maximus indicus) and Domestic Animals. Indian Journal of Veterinary Anatomy, 31(1): 21-23.
- Thiemann, A.K. and Bell, N.J. (2001). The peculiarities of donkey respiratory disease. International Veterinary Information Service, Ithaca, New York, U.S.A
- Wysocki, J., Kielska, E., Janiuk, I. and Charuta, A. (2010). Analysis of larynx measurements and proportions in young and adult domestic pigs (Sus scropha domestica). Turkish Journal of Veterinary Animal Science, 34(4): 339-347. http://dx.doi:10.3906/vet-0802-27
References
Badawy, A.M. (2005). Experimental studies on laryngeal hemiplegia in equine with special reference to surgical affections of nearby structures. Ph.D., Zagazig University, Faculty of Veterinary Medicine, Moshtohor, Egypt.
Baltoo, A., Rajput, R., Pathak, V. and Vij, S. (2018).Gross anatomical parameter of extrapulmonary respiratory system of Gaddi Goat. Indian Journal of Veterinary Anatomy, 30 (2): 97-99.
Casteleyn, C., Simoens, P. and Broeck V.W. 2008. Larynx associated lymphoid tissue (LALT) in young cattle. Veterinary Immunology and Immunopathology, 124:394-439. http://dx.doi:10.1016/j.vetimm.2008.04.008.x
Dyce, K.M., Sock, W.O. and Wensing, C.S.G. (2010). Textbook of Veterinary anatomy 4th ed. W.B sounders company Philadelphia. ISBN 978-1-4160-6607-1. Pp 152-156.
Erdogan, S. and Perez, W. (2013). Anatomical characteristics of the larynx in giraffe (Giraffa camelo pardalis). Journal of Morphological Science, 30: 266-271.
Eshra, E.A., Metwally, M.A., Hussieni, H.B. and Kassab, A.A. (2016). Comparative anatomical and histological studies on the laryngeal cartilages of buffaloes, camels and donkeys. Journal of Advanced Veterinary Research, 6: 27-36. http://advetresearch.com/index.php/avr/index.
Eurell, J.A. and Frappier, B.L (2006). Dellmann’s textbook of veterinary histology, 6th ed. Blackwell Publishing, Wiley India PVT. Ltd., New Delhi. ISBN: 978-81-265-4187-4.
Konig, H.A. and Liebich, H. (2004). Textbook and color atlas of veterinary anatomy of domestic mammals. SchattauerGmBH, HÖlderlinstraBe 3, D-70174 Stuttgart, Germany. ISBN: 3-7945-2101-3. http://www.schattauer.de
Luna, L.G. (1968). Manual of Histologic Staining Methods of Armed Forces Institute of Pathology. 3rd ed., McGraw Hill Book Co., New York
Metwally, M.A., Hussieni, H.B., Kassab, A.A. and Eshrah, E.A. (2018). Some comparative anatomical studies on the laryngeal muscles and cavity of buffaloes, camels and donkeys. Journal of Advanced Veterinary Research, 8(3): 32-37. http://advetresearch.com/index.php/avr/index.
Nickel, R., Schummer, A. and Seiferle, E. (1979). The viscera of the domestic mammals 2nd revised ed. Verlag Paul Parey. Berlin, Hamburg. 211-281.
Parkash, T. and Kumar, P. (2019). Histolomorphological and histochemical studies on larynx of Pigs. Indian Journal of Veterinary Anatomy, 31 (1): 138-140.
Parkash, T. and Kumar, P. (2021). Gross and scanning electron microscopic studies in the larynx of Pigs. Haryana Veterinarian, 60(1): 100-103.
Rajani, C.V., Surjith, K.P, Patki, H.S., Jitha, K.R., Binsha, K.M., Abdul Azeez, George Chandy, and Ashok, N. (2019).Comparative morphology of the larynx, trachea and lungs of Asian elephant (Elephas maximus indicus) and Domestic Animals. Indian Journal of Veterinary Anatomy, 31(1): 21-23.
Thiemann, A.K. and Bell, N.J. (2001). The peculiarities of donkey respiratory disease. International Veterinary Information Service, Ithaca, New York, U.S.A
Wysocki, J., Kielska, E., Janiuk, I. and Charuta, A. (2010). Analysis of larynx measurements and proportions in young and adult domestic pigs (Sus scropha domestica). Turkish Journal of Veterinary Animal Science, 34(4): 339-347. http://dx.doi:10.3906/vet-0802-27