. Kirkes' handbook of physiology . ane; c, sections of blood-capillaries; m, section of plain muscle fibers;, central lacteal. (Schafer.) ing only a nucleus surrounded by the remains of the protoplasm in its narrowstem. This transformation is a normal process which is continually going onduring life, the cells themselves being supposed to regenerate into their originalshape. STRATIFIED EPITHELIUM 27 Stratified Epithelium. The term stratified epithelium is employedto describe the type found in the skin or its derivatives in which the cellsforming the epithelium are arranged in a considerable
. Kirkes' handbook of physiology . ane; c, sections of blood-capillaries; m, section of plain muscle fibers;, central lacteal. (Schafer.) ing only a nucleus surrounded by the remains of the protoplasm in its narrowstem. This transformation is a normal process which is continually going onduring life, the cells themselves being supposed to regenerate into their originalshape. STRATIFIED EPITHELIUM 27 Stratified Epithelium. The term stratified epithelium is employedto describe the type found in the skin or its derivatives in which the cellsforming the epithelium are arranged in a considerable number of superim-posed layers. The shape and size of the cells of the different layers, as wellas the number of layers, vary in different situations. Thus the superficial cellsmay be either squamous or columnar in shape and the deeper cells rangefrom polygonal to columnar in form. Stratified Squamous. The intermediate cells are polygonal in shape andapproach more to the flat variety the nearer they are to the surface, and to the. Fig. 26.—Squamous Epithelium Scales from the Inside of the Mouth. X 260. (Henle.) columnar as they approach the lowest layer. In many of the deeper layersof epithelium in the mouth and skin, the outline of the cells is very irregular,in consequence of processes passing from cell to cell across these cells, figure 28, are termed prickle cells. These prickles are the in-tercellular bridges which run across from cell to cell, the interstices being filledby the transparent intercellular lymph. When this increases in quantity
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