. A practical treatise on diseases of the skin, for the use of students and practioners . lls, or corpuscles, polyhedral in outline and diffusely are masses of granular protoplasm.,living matter, which by their relations to Fig. 7. each other form a protoplasmic network en-veloping the entire surface of the body andlining all channels and cavities which are indirect or indirect connection with the elements are flattened by reason of theirapposition, and separated from each other byan intercellular substance, which has been de-scribed as a cement-substance. There is,
. A practical treatise on diseases of the skin, for the use of students and practioners . lls, or corpuscles, polyhedral in outline and diffusely are masses of granular protoplasm.,living matter, which by their relations to Fig. 7. each other form a protoplasmic network en-veloping the entire surface of the body andlining all channels and cavities which are indirect or indirect connection with the elements are flattened by reason of theirapposition, and separated from each other byan intercellular substance, which has been de-scribed as a cement-substance. There is,without question, a system of channels be-tween the epithelia, by which the fluids ofnutrition are conveyed from cell to cell. Allare, however, uninterruptedly united to eachother by means of delicate spokes, known as Prioklecel,sla^r_the mucousprickles, spines, or thorns. The living mat-ter, which produces a delicate reticulum within each protoplasmicbody, its points of intersection being termed nuclei, nucleoli, andgranules, furnishes the filaments already described, which thus pro-. 26* ANATOMY AND PHYSIOLOGY OF THE SKIN. duce continuity through all the living layers of the epithelial elements,as well as through the underlying layers of the connective epithelia are unprovided with either blood-or lymph-vessels;hut. when living, are supplied with a large number of nerves, which,in the shape of very minute beaded fibres, traverse the intercellularsubstance, and are in direct communication with the reticulum ofliving matter within the protoplasmic bodies themselves. The living masses of protoplasm, just described, play the mostimportant part in all the pathological and physiological proaobserved in the skin. It is probable that, in the embryo, all theappendages of the skin are firmed directly by their assimilative andreproductive processes ; and it is certain that, in health and disease,they furnish the organic matter of all secretions. The epithelia next the corium
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Keywords: ., bookauthorhydejame, bookcentury1800, bookdecade1880, bookyear1888
