. Elements of histology. Histology. i88 Elements of Histology. [Chap. xxm. in the smaller ducts; in mammals, the epithelium is a single layer of polyhedral cells. No fibrillation is noticeable in the epithelial cells. At the transition of the terminal ducts into the alveoli there is occasion- ally a slight enlargement, called the infundibulum; here the granular-. looking cells of change lining epithelial the duct into the columnar transparent mucous cells the alveoli. 252. The alveoli of these glands are identical with those of the mucous glands described above (Fig. 110)—, the sub- lingua
. Elements of histology. Histology. i88 Elements of Histology. [Chap. xxm. in the smaller ducts; in mammals, the epithelium is a single layer of polyhedral cells. No fibrillation is noticeable in the epithelial cells. At the transition of the terminal ducts into the alveoli there is occasion- ally a slight enlargement, called the infundibulum; here the granular-. looking cells of change lining epithelial the duct into the columnar transparent mucous cells the alveoli. 252. The alveoli of these glands are identical with those of the mucous glands described above (Fig. 110)—, the sub- lingual gland, as re- gards size, tubular branched nature, the lining epithelium, and lumen. In some instances (as in the soft palate and tongue) the duct near the opening is lined with ciliated columnar epithelium. The stratified epithe- lium of the surface is generally continued a short dis- tance into the mouth of the duct. 253. The serous glands at the root of the tongue (von Ebner) differ from the mucous chiefly in the size, epithelium, and lumen of the alveoli. These are of exactly the same nature and structure as those of the serous or true salivary glands. Fig. 110.—Part of a Lobule of a Mucous Gland in the Tongue of Dog. a, Gland tubes (alveoli) viewed in various directions ; they are lined with transparent '* mucous cells;" d, duct, lined with small polyhedral cells. (Atlas.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925. Philadelphia : H. C. Lea's Son
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