The American journal of anatomy . in direction, butarc connected with one another by lower transverse and oblique ridges,so that in sections parallel to the surface at the level of the ridgesa connective tissue network is seen surrounding islets of epithelium,instead of the epithelial network seen at this level in sections of theepidermis. As described by Oppel (97) in Phalangista, Phasco-larctus and Aepyprymnus, true papillae are wanting in the opossum. The Structure of the Mammalian (Esophagus. 7 On the surface of the epithelium a well-defined stratum corneumis seen, of fairly uniform thickn
The American journal of anatomy . in direction, butarc connected with one another by lower transverse and oblique ridges,so that in sections parallel to the surface at the level of the ridgesa connective tissue network is seen surrounding islets of epithelium,instead of the epithelial network seen at this level in sections of theepidermis. As described by Oppel (97) in Phalangista, Phasco-larctus and Aepyprymnus, true papillae are wanting in the opossum. The Structure of the Mammalian (Esophagus. 7 On the surface of the epithelium a well-defined stratum corneumis seen, of fairly uniform thickness, although it dips down some-what in the intervals between the longitudinal ridges of the laminapropria. This corneous layer presents two distinct strata, whichcorrespond in a general way in their appearance and staining reac-tions to the stratum lucidum and stratum corneum of the deeper layer, 35 micra in thickness, stains deeply in eosin, par-ticularly at the deep and superficial margins, the intermediate por-. .. .^Stratum contemn ? • Stratum lucidum - - . Hj ???:...;*.....? | _ Lamina propria mucosae Fig. 1. Transverse section of epithelium of oesophagus of Didelphys atlevel of cricoid cartilage. X lo-tion exhibiting, as is often the case with the stratum lucidum, patchyor irregular staining. This layer is composed of flattened cells,elongated, spindle-shaped in section, with a flattened nucleus rod-shaped in section. The superficial layer, 17 micra in thickness atits thickest portion, stains but faintly in eosin. It consists of cellsof irregular polygonal shape similar to those of the stratum corneumof the epidermis with the exception that remains of the nucleus areto be found in them, in the form of shrunken remains of the nuclearmembrane and one or two chromatic particles. 8 JKniil Goetsch. The stratum germinativum requires no special comment exceptthat its superficial layers contain no granules of eleidin. There is a gradual reduction in thickness of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1910
