Identifier: anatomydescripti1897gray (find matches)
Title: Anatomy, descriptive and surgical
Year: 1897 (1890s)
Authors: Gray, Henry, 1825-1861 Carter, H. V. (Henry Vandyke), 1831-1897 Pick, T. Pickering (Thomas Pickering), 1841-1919
Subjects: Anatomy Human anatomy Anatomy, Surgical and topographical
Publisher: London : Longmans, Green
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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n. Innermost layers of the elastic lon^tudinal fibres.h. Homogeneous innei-most layers of the mucousmembrane, i: Deepest round cells, rl. Middle elon-gated cells, c. Superficial cells, bearing cilia. cords ; the tympanum and Eustachian tube; the Fallopian tube and upper portionof the uterus; the vasa efferentia; coni vasculosi ; the first part of the excre-tory duct of the testicle ; and the ventricles of the brain and central canal of thespinal cord. Stratified epithelium consists of several layers of cells superimposed one onthe top of the other and varying gi^eatly in shape. The cells of the deepest layerare for the most part columnar in form, and as a rule form a single layer, placedvertically on the supporting membrane; above these are several layers of Fig. 12.—Epithelial cells from the oral cavity of man. Magnified 350 times. f
Text Appearing After Image:
a. Large. 6. Middle sized, c. The same with two nuclei. spheroidal cells, which as they approach the surface become more and more com-pressed, until the superficial layers are found to consist of flattened scales (fig. 12),the margins of which overlap one another so as to present an imbricated appear-ance. They here undergo a chemical change from the conversion of their proto-plasm into a horny substance. A variety of squamous epithelium which is found in the deeper layers ofstratified pavement-epithelium has been termed^nc/iZe cells. These cells possessshort fine fibrils which pass from their margins to those of neighbouring cells,serving to connect them together. Since they are not here closely connectedtogether by cement-substance, but are separated from each other by intercellularchannels, across which these fine fibrils may be seen bridging, this gives to thecell, w^hen isolated,, the appearance of being covered over with a number ,of short CONNECTIA^E TISSUES 15 spikes, in conse

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