. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. THE ALIMENTARY CANAL. 85 The gizzard is most highly developed, and of a deep-red color, in the Seratchers and flat-billed Swimmers (as Fowls and Swans); but comparatively thin and feeble in Birds of Prey (as the Eagle). The gizzard is follow- ed by the intestines, which are longer than those of Reptiles: the small intestine begins with a loop (the duo- denum), and is folded several times upon it- self ; the large intestine is short and straight, terminatin
. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. THE ALIMENTARY CANAL. 85 The gizzard is most highly developed, and of a deep-red color, in the Seratchers and flat-billed Swimmers (as Fowls and Swans); but comparatively thin and feeble in Birds of Prey (as the Eagle). The gizzard is follow- ed by the intestines, which are longer than those of Reptiles: the small intestine begins with a loop (the duo- denum), and is folded several times upon it- self ; the large intestine is short and straight, terminating in the sole outlet of the body, the cloaca. A liver and pancreas are always attached to the upper part of the small in- testine. The alimentary ca- nal in Mammals is clearly separated into four distinct cavities: the pharynx, or throat; the oesophagus, or gul- let ; the stomach; and the intestines. The pharynx is more Fig. 50.—Digestive Apparatus of the Fowl: 1, tongue; 2, pharynx; 3, 5, oesophagus; 4, crop; Complicated than in 6, proventriculus; 7, gizzard; 8,9,10, duodenum ; jy> i Tf * -p I 11,12, small intestine; 13, two caeca (analogue of I5iraS. It IS a lUIinel- t^e co\on of mammals); 14, their insertion into Shaped bag;, having the int<final *jbe; 15 rectum; 16 cloaca; IT, r P* o anus; 18, mesentery ; 19, 20, left and right lobes Seven Openings lead- of lively 21, gall-bladder; 22, insertion of pan- creatic and biliary ducts; 23, pancreas; 24, lung; ing into it: tWT0 from 25, ovary; 26, 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 Orton, James, 1830-1877; Birge, E. A. (Edward Asahel), 1851-1950. New York : Harper & Bros.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1883
