Intercellular Substance


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intercellular substance

[¦in·tər′sel·yə·lər ¦səb·stəns]
(histology)
Tissue component that lies between cells.

Intercellular Substance

 

an amorphous thin film found between contiguous cells of plant tissue, cementing together their primary walls. In cross sections of coniferous wood the intercellular substance appears as a light network with thickenings in the corners of contiguous cells. Pectin substances usually predominate in the composition of intercellular substance; however, in woody tissues, lignin predominates. As a result of the dissolution of the intercellular substance, cells lose their connection with one another and dissociate.

In animals and man the intercellular substance is a characteristic component of various types of connective tissue (cartilage, bone), which is formed by the cells of that tissue and consists of collagen and various fibers (reticular, elastic) that are immersed in an amorphous ground substance. The latter consists primarily of mucopolysaccharides (hyaluronic and other acids); the fibers contain scleroproteins, which are fibrillar proteins. The basic functions of intercellular substance are supportive, or mechanical, and trophic, or more accurately, metabolic.

References in periodicals archive ?
* [beta]: ([10.sup.3] [gamma][??] < f < [10.sup.8] Hz)--current flow through the intercellular substance, cellular membranes and cellular contents and reflects the relaxation polarization of polar macromolecules, and is determined by their effective radii and viscosity of the medium, as well as the dielectric losses in the cell membranes--tangent the dielectric loss angle tg[delta] = [epsilon]"/[epsilon]' serving as a quantitative measure of the relative contribution of the electrically conductive and dielectric properties of the medium when the electromagnetic field interacts with it [5, 10].
* [gamma]: (f > [10.sup.8] Hz)--phenomena of resonance of water molecules of intercellular substance and cellular contents, and orientational polarization of water molecules.
The replacement circuit contains: [C.sub.M]--the frequency-dependent equivalent electrical capacitance of cell membranes; frequency independent equivalent active resistances (resistances) of cell contents [R.sub.C] and of intercellular substance [R.sub.0].
This assignment is facilitated due to the physiology, the particular anatomic positioning of this ganglion, and its histological formation, as it has (as the other cranial parasympathetic ganglia) abundant intercellular substance. This situation, contrary to the one found in the central nervous system (CNS), allows the use of this ANS segment as an experimental model suitable for the analysis of the matrix/ neuron and matrix/neuroglia interaction.