Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1884 Excerpt: ... Illustrating Mr. Adam Sedgwick's Paper "On the Early Development of the Anterior Part of the Wolffian Duct and Body in the Chick, together with some Remarks on the Excretory System of the Vertebrata." List of Reference Letters. al., alimentary canal; ao., aorta; c. v., cardinal vein; e. gl., external glomerulus; ep., epiblast; hy., hypoblast; i. c. m., intermediate cell mass; ». gl., internal glomerulus; k. b., blastema of Wolffian tubules; me., mesentery; m. p., muscle plate; nc., notochord; p. c., body cavity; ./peritoneal funnel;pv., proto-vertebra; pv. cell-mass, which later becomes a protovertebra; W. d., Wolffian duct; W. t., Wolffian tubule. Fig. 1.--Section through 10th segment of a chick with ten segments, showing origin of Wolffian duct. Pig. 2.--Section through 10th segment of a chick with twelve segments. Shows second stage in development of Wolffian duct. Figs. 3 and 4.--Successive sections through the 10th segment of a chick with thirteen segments. Shows further development of Wolffian duct. Fig. 5.--Section through 10th segment of a chick with fourteen segments, showing further development of Wolffian duct and anterior Wolffian tubules. The above series are all taken through the points where rudimentary segmental tubes connect the Wolffian duct and peritoneal epithelium, except Fig. 4, which is through a point between two tubules. The object of the series is to trace the continuity in the development of the Wolffian duct and anterior tubules, which exists between the 7th and 11th segments inclusive. Jg. 6.--Section through a chick with twelve segments just behind the 12th segment. Shows independence of Wolffian duct from peritoneal epithelium and intermediate cell mass. ?IG. 7.--Section through the 13th segment of a chick with thirteen s...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1884 Excerpt: ... Illustrating Mr. Adam Sedgwick's Paper "On the Early Development of the Anterior Part of the Wolffian Duct and Body in the Chick, together with some Remarks on the Excretory System of the Vertebrata." List of Reference Letters. al., alimentary canal; ao., aorta; c. v., cardinal vein; e. gl., external glomerulus; ep., epiblast; hy., hypoblast; i. c. m., intermediate cell mass; ». gl., internal glomerulus; k. b., blastema of Wolffian tubules; me., mesentery; m. p., muscle plate; nc., notochord; p. c., body cavity; ./peritoneal funnel;pv., proto-vertebra; pv. cell-mass, which later becomes a protovertebra; W. d., Wolffian duct; W. t., Wolffian tubule. Fig. 1.--Section through 10th segment of a chick with ten segments, showing origin of Wolffian duct. Pig. 2.--Section through 10th segment of a chick with twelve segments. Shows second stage in development of Wolffian duct. Figs. 3 and 4.--Successive sections through the 10th segment of a chick with thirteen segments. Shows further development of Wolffian duct. Fig. 5.--Section through 10th segment of a chick with fourteen segments, showing further development of Wolffian duct and anterior Wolffian tubules. The above series are all taken through the points where rudimentary segmental tubes connect the Wolffian duct and peritoneal epithelium, except Fig. 4, which is through a point between two tubules. The object of the series is to trace the continuity in the development of the Wolffian duct and anterior tubules, which exists between the 7th and 11th segments inclusive. Jg. 6.--Section through a chick with twelve segments just behind the 12th segment. Shows independence of Wolffian duct from peritoneal epithelium and intermediate cell mass. ?IG. 7.--Section through the 13th segment of a chick with thirteen s...
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