[Paracoronal cavity system and papillary water uptake].
In the research it has been carried out a morphological investigation of the paracoronal area of the fungiform papillae. By means of scanning, transmission and light microscopy it has been observed in this area a series of superficial openings around and external to the ciliary crown; and in the epithelium corresponding cavitary system. Each cavity on the other hand appears surrounded by extremely narrow epithelial cells and thus appears able to facilitate the papillary exchange activity. This paracoronal cavitary system is proposed as morphological candidate for the conspicuous water entry in the papillae during osmotic phenomena.
D000818:Animals; D008855:Microscopy, Electron, Scanning; D009995:Osmosis; D011893:Rana esculenta; D014059:Tongue / Q000378:metabolism / Q000648:ultrastructure*; D014867:Water / Q000378:metabolism*
D014867:Water
Sistema cavitario paracoronale e richiamo idrico papillare.