pillar cells


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.

pil·lar cells

cells forming the outer and inner walls of the tunnel in the spiral organ.

Corti,

Marquis Alfonso, Italian anatomist, 1822-1888.
Corti arch - the arch formed by the junction of the heads of Corti inner and outer pillar cells.
Corti auditory teeth - tooth-shaped formations or ridges occurring on the vestibular lip of the limbus lamina spiralis of the cochlear duct. Synonym(s): auditory teeth
Corti canal - Synonym(s): Corti tunnel
Corti cells - sensory cells in the organ of Corti in synaptic contact with sensory as well as efferent fibers of the cochlear (auditory) nerve. Synonym(s): cochlear hair cells
Corti ganglion - an elongated ganglion of bipolar sensory nerve cell bodies on the cochlear part of the vestibulocochlear nerve in the spiral canal of the modiolus. Synonym(s): spiral ganglion of cochlea
Corti membrane - a gelatinous membrane that overlies the spiral organ (Corti) in the inner ear. Synonym(s): tectorial membrane of cochlear duct
Corti organ - a prominent ridge of highly specialized epithelium in the floor of the cochlear duct. Synonym(s): spiral organ
Corti pillars - cells forming the outer and inner walls of the tunnel in the organ of Corti. Synonym(s): Corti rods; pillar cells; pillar cells of Corti
Corti rods - Synonym(s): Corti pillars
Corti tunnel - the spiral canal in the organ of Corti, filled with fluid and occasionally crossed by nonmedullated nerve fibers. Synonym(s): Corti canal
pillar cells of Corti - Synonym(s): Corti pillars
References in periodicals archive ?
The epithelial lining of gill filaments (PE) comprises abundant mucous cell (MC) as well as chloride cells (CC) while the secondary lamellar epithelium comprise pavement cell (PC), pillar cells (PI), blood capillaries (B) as well as few mucous cells (MC).
The numerical density of the apical microvilli was also sampled in the same regions of the pillar cells. A second test system comprising a straight line 125 mm in length (equivalent to 5.0 [[micro]meter] at 25,000X) was placed over the micrograph at random, although parallel to the plane of the cuticle.
The present study focuses particularly on the ultrastructure of the flange and perikaryon regions of the pillar cells, which form the principal epithelial barrier between the hemolymph and the external medium.
Pillar cells. The electron-dense pillar cells are highly differentiated epithelial cells constituted by two distinct regions: the pillar cell perikaryon, 7.8 [+ or -] 1.4 [[micro]meter] (n = 10) in height by 9.1 [+ or -] 5.8 [[micro]meter] (n = 14) in width [ILLUSTRATION FOR FIGURE 2 OMITTED]; and the pillar cell flange, a fine, roughly elliptical, radial, apical expansion of the perikaryon [ILLUSTRATION FOR FIGURE 2 OMITTED], 56 [+ or -] 10 [[micro]meter] (n = 3) in diameter and 2.86 [+ or -] 0.16 [[micro]meter] (n = 6) in thickness near the perikaryon.
The apical membrane of the pillar cells, overlain by the fine gill cuticle [249.0 [+ or -] 4.4 nm (n = 10) thickness], is folded into an extensive system of microvilli [ILLUSTRATION FOR FIGURE 4 OMITTED] that are organized into small tufts of from 4 to 8 villi [ILLUSTRATION FOR FIGURE 7 OMITTED].
The apical flange region of the pillar cells becomes attenuated and thinner as the distance from the perikaryon increases, attaining only 1.38 [+ or -] 0.30 [[micro]meter] (n = 6) in thickness at the extreme margins [ILLUSTRATION FOR FIGURE 9 OMITTED].
Typically, a single septal cell connects the bases of two adjacent pillar cells, its lateral ends interdigitating in a restricted manner with their basolateral membranes ([ILLUSTRATION FOR FIGURE 12 OMITTED], insert).
Various ultrastructural alterations appear in the pillar cells of the gill lamellae of M.
In the gill epithelium of Macrobrachium olfersii, the apical surface of the pillar cells is highly amplified by an extensive system of microvilli (type 2, see Cioffi, 1984).