Light and Scanning-Electron Microscopic Studies on the Mechanical Papillae of Tongue of Pig (Sus scrofa)
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Authors
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Shailja Bansal
Department of Veterinary Anatomy, Post-Graduate Institute of Veterinary Education and Research, Jaipur-302 031 (Rajasthan)
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Shikha Saini
Department of Veterinary Anatomy, Post-Graduate Institute of Veterinary Education and Research, Jaipur-302 031 (Rajasthan)
Keywords:
Filiform, Fungiform, Conical papillae, Scanning-electron microscopyAbstract
The present study was conducted on histological and scanning-electron microscopic characteristics of mechanical papillae of tongue of domestic pigs (Sus scrofa). The filiform papillae, present on the dorsal surface from tip to root, displayed distinctive features, including elongated, conical shapes with caudally directed keratinized projections. Histologically, the epithelial layer showed variations in cell nuclei, while scanning- electron microscopy revealed intricate patterns and structures. Fungiform papillae, mushroom-shaped and slightly projecting above the lingual mucosa, exhibited a unique connective tissue core, with taste buds inconsistently present. Scanning-electron microscopy revealed varying shapes and sizes, with round to oval appearances and sporadic distribution among filiform papillae. Conical papillae, classified into two types based on tip morphology, demonstrated keratinized stratified squamous epithelium and connective tissue cores reaching the surface level. Scanning electron microscopy showcased their caudal location, vertical orientation, and transversely oriented grooves, emphasizing their role in food swallowing. This comprehensive exploration contributes valuable insights into the lingual papillae of domestic pigss.
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