The American journal of anatomy . L, muscularismucoscB Gland tubulesshowing mucouscells and demi-lunes Fig. 9. Transverse section of tunica mucosa and part of tela submucosa ofoesophagus of Procyon. x 120. 22 Emil Goetsch. are so largo that they form small sessile acini along the sides ofthe tubules. In both cases intercellular capillaries are seen in ironhematoxylin preparations, outlined by cement lines running betweenthe adjacent surfaces of the cells. In the acinus-like demilunes ofi In glands at the lower end these intercellular ductules open into acentral lumen which is directly continuo
The American journal of anatomy . L, muscularismucoscB Gland tubulesshowing mucouscells and demi-lunes Fig. 9. Transverse section of tunica mucosa and part of tela submucosa ofoesophagus of Procyon. x 120. 22 Emil Goetsch. are so largo that they form small sessile acini along the sides ofthe tubules. In both cases intercellular capillaries are seen in ironhematoxylin preparations, outlined by cement lines running betweenthe adjacent surfaces of the cells. In the acinus-like demilunes ofi In glands at the lower end these intercellular ductules open into acentral lumen which is directly continuous with the lumen of themain tubule. Although the material was not suitable for studyingthe secretory content of the cells, because of the fact that the oesoph-agus was fixed in Zenkers fluid fully an hour after the animal was l)> milune .. Mucous c< II imm w Serous ^^BCTO:^ ?/%. (demilune) Fin. 10. Portion of tubule of oesophageal gland of Procyon showiiumucous cells and large demilunes with secretion granules, x; 500. killed, yet in some of the more superficial glands the cells of thedemilunes contained well-fixed secretion granules (Fig. 10), whichstained strongly in eosin and in iron hematoxylin and which occu-pied the portion of the cells bordering on the lumen. ISTo basalfilaments, however, were demonstrated. The ducts of the gland are lined for a very short distance at theirorigin from the lobule, by a low simple cubical epithelium. A shortdistance from its origin this changes to a two-layered epithelium,the cells of the surface layer having their long axes perpendicularto the basement membrane, those of the deep layer parallel to it. The Structure of the Mammalian (Esophagus. 23 In the upper part of the duct a third layer is added and the surfacelayer becomes flattened. The ducts enter the epithelium between
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1910
