. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. THE PERITONEUM. 305 The various folds and mesenteries carry the blood-vessels and nerves to the different organs ; in this course the vessels are sur- rounded by large lymphatics, which communicate with each other. Fio-. Preparations from the peritoneum of Runa esculenta.—G. H. I. From jieritoneum of the ventral wall of abdomen, stained with silver and logwood (Hartnack, Oo. I, Syst. 7). II. From mesentery of small intestine of liana esculenta, stained with silver (Hartnack, Oc. I, Syst. 7). III. Preparation to show cili
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. THE PERITONEUM. 305 The various folds and mesenteries carry the blood-vessels and nerves to the different organs ; in this course the vessels are sur- rounded by large lymphatics, which communicate with each other. Fio-. Preparations from the peritoneum of Runa esculenta.—G. H. I. From jieritoneum of the ventral wall of abdomen, stained with silver and logwood (Hartnack, Oo. I, Syst. 7). II. From mesentery of small intestine of liana esculenta, stained with silver (Hartnack, Oc. I, Syst. 7). III. Preparation to show ciliated cells between non-ciliated cells ; after Neumann. IV. Vertical section at border of liver to show ciliated epithelium ; after Neumann. A Stoma. B Pigment-ceUs. C Ciliated cells. D Non-ciUated cells. b. Minute structure (Fig\ 201). [The peritoneum is a serous membrane, formed for the most part of a layer of irreg-ular endothelial cells, arranged on a thin layer of subserous, connective-tissue (Fig-. 201 I-, II, and III). The endothelial cells are attached to each other by cement-sub- stancCj easily stained by silver nitrate. The cells covering the general surface of the peritoneal cavity are larger and broader than those covering the mesentery of the small intestine (compare I and II, Fig. 201). At various points stomata are found, bordered by smaller and more deeply staining epithelium (I, A). The membrane covering the general cavity is also much more pigmented than that covering the mesentery (compare I and II). Various portions of the peritoneal surface possess ciliated cells^ X. 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 Ecker, Alexander, 1816-1887; Haslam, George. Oxford, Clarendon Press
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