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"Siphonal stomach and spiral valve of Basking-shark (Selache). a, esophagus; b, cardiac portion of stomach; c, pyloric portion; d, pouch intermediate between stomach and duodenum, with circular valves at both ends; e, duodenum; f, valve of intestine; g, ductus hepaticus; h, spleen." — Encyclopedia Britannica, 1893

Shark Stomach

"Siphonal stomach and spiral valve of Basking-shark (Selache). a, esophagus; b, cardiac portion of stomach;…

"<em>A</em>, cardiac end; <em>B</em>, pyloric end." &mdash; Blaisedell, 1904

Stomach

"A, cardiac end; B, pyloric end." — Blaisedell, 1904

Views of the stomach. Labels: A. stomach (human). B. Same, anterior wall removed. C. Portion of stomach, pylorus and duodenum. D. Section through coats of stomach. E. Fundus of a cardiac gland. F. Epithelium from surface of stomach. G. Arterie sand veins of mucous membrane. w. Esophagus. 2. Duodenum. 3. Pylorus. $. Cardia. 5. Lesser curvature. 6. Greater curvature. 7. Anterior surface. 8. Pyloric valve. 9. Mucous membrane, with rugae. 10. Inner surface of gastric mucous membrane. 11. Mucous membrane of duodenum with villi. 12. Pyloric gastric glands. 13. Circular or deep muscular fibers. 17. Mucous membrane. 18. Muscularis mucosae. 19. Submucous coat. 20. Circular muscular layer. 21. Longitudinal muscular layer. 22. Serous coat. 23. Orifice of gland. 24. Fundus of gland.

Views of the Stomach

Views of the stomach. Labels: A. stomach (human). B. Same, anterior wall removed. C. Portion of stomach,…