Morpho-physiological characteristics and classification of the Chievitz' juxtaoral organ.

The authors suppose that thè parenchymal cells of thè Ist type of thè Chievitz' Juxtaoral organ may be paraneurons with respect to their secretory function which may modulate thè afferent dendritic zones of different kinds of sensory nerve fonnations — SNF (endings). In this respect thè parenchymal cells of thè Ist type may have thè same functions as glomus cells in thè glomus caroticum or Merkel cells in thè epidermis. As to thè function of thè Juxtaoral organ thè authors presume its multimodal mechanosensory function, as it contains 4 to 5 kinds of SNF (intraepithelial nerve fibers, simple arborizations, maybe Ruffini SNF, glomerular SNF, and simple sensory corpuscles) with 2 basic different modes of adaptation: simple SNF. and Ruffini SNF adapt slowly, some intraepithelial nerve fibers, glomerular SNF and lamellar corpuscles adapt rapidly. The existence of this organ already in newbom indicates its important mechanosensory function connected with nutrition reflexes and orai cavity walls tonus regulation, later on, connected with mastication and speech, too. As to thè classification, thè Juxtaoral organ belongs to complex SNF with a Constant accumulation of different kinds of SNF.