. The anatomical record. Anatomy; Anatomy. 999 JOHN SUNDWALL only a thin membrane between the vessel lumina and the surface cuboidal cells. ]Much variation exists also in the size of the lumina (fig. 1). Generally speaking, the vessels of the choroid plexus may be di^'ided into two groups: 1) The vessels with the thick walls possess as a rule narrow lumina and have the same structure in general as do small arteries. Weigert's stain shows a well de- veloped tunica elastica interna, which in most instances is cor-. Fig. 1 Choroid plexus of the ox. a, artery; b, vein or sinus. Microphoto- graph,


. The anatomical record. Anatomy; Anatomy. 999 JOHN SUNDWALL only a thin membrane between the vessel lumina and the surface cuboidal cells. ]Much variation exists also in the size of the lumina (fig. 1). Generally speaking, the vessels of the choroid plexus may be di^'ided into two groups: 1) The vessels with the thick walls possess as a rule narrow lumina and have the same structure in general as do small arteries. Weigert's stain shows a well de- veloped tunica elastica interna, which in most instances is cor-. Fig. 1 Choroid plexus of the ox. a, artery; b, vein or sinus. Microphoto- graph, oc. 10, obj. 16 mm., B. & L. Tech: Bensley's alcohol bichloride bichro- mate solution, haematoxylin and eosin. rugated. Fine, waving elastic fibers may be seen in the tunica media, which is well developed. The fibers may be further traced to the cuboidal cells and are frequently seen to form a basement membrane for these cells. 2) The second group of vessels are those with comparatively thin walls and wide lumina. These may be regarded as veins or sinuses. The walls are com- posed almost entirely of white fibrous connective tissue and cannot be differentiated into intima, media, and adventia, but are similar in structui'c throughout. Only hero and there are. 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 Bardeen, Charles Russell, 1871-1935, ed; Boyden, Edward A. (Edward Allen), 1886-1976; Bremer, John Lewis, 1874- ed; Hardesty, Irving, b. 1866, ed; American Association of Anatomists; American Society of Zoologists; Wistar Institute of Anatomy and Biology. [New York, etc. ] A. R. Liss [etc. ]


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906