#oral mucosa

• Acanthophagous — An ecological and zoological term used as an adjective to describe an animal organism that feeds predominantly or exclusively on spiny plants, thistles, or cacti (such as certain camel species, desert rodents, or specialized phytophagous insects). As a masculine noun, it defines a specimen or species anatomically and physiologically adapted to this restrictive trophic regimen, typically featuring a keratinized oral mucosa immune to pricks and a digestive system capable of neutralizing or grinding rigid spines.
• Astringency — The property or quality of a substance being astringent; a complex physiological phenomenon characterized by the sensation of dryness, roughness, and contraction of the mucous membranes, especially oral or cutaneous ones. In the sensory analysis of wines and foods, it represents the tactile, non-gustatory property derived from the precipitation of salivary proteins (specifically proline) by polyphenolic compounds.