. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 428 ANATOMY OF VERTEBRATES. before it enters the commencement of the wide intestine, near the beginning of the spiral valve. The gall-duct in the Sturgeon and Planirostra terminates at a greater distance above the valvular intestine. The ordinary position of the entry of the bile into the alimentary canal in Osseous Fishes is at the commencement of the small intestine near the pylorus. The terminal part of the gall- duct is usually slightly expanded, fig. 291, e, and its orifice is often supported on a papilla, as in the
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 428 ANATOMY OF VERTEBRATES. before it enters the commencement of the wide intestine, near the beginning of the spiral valve. The gall-duct in the Sturgeon and Planirostra terminates at a greater distance above the valvular intestine. The ordinary position of the entry of the bile into the alimentary canal in Osseous Fishes is at the commencement of the small intestine near the pylorus. The terminal part of the gall- duct is usually slightly expanded, fig. 291, e, and its orifice is often supported on a papilla, as in the Sturgeon, the Skate, and the Labrax lupus. § 74. Pyloric Appendages and 285. Alimentary cimiil nf tl siliowing Uir I'lle (if I'll Dermopteri sluiw canal is simple: no the trace Pancreas of Fishes. â In most Osseous Fishes the intestine buds out at its commencement into long and slender pouches, or ca3ca, fig. 281, d, into which it ajjpears that the food does not enter, and which, there- fore, increase the direct secre- ting surface of the alimentary tract, over and above the ex- tent of the mechanism for pounding and propelling the chyme, or of the vascular sur- face which selects and absorbs the chyle. By a very gradual series of changes of these cascal processes, within the limits of tlie class of Fishes, they be- come massed into a body, fig. 282, d, like the conglomerate gland, called' pancreas' in Man. The secretion of the rudimen- tal representatives of this gland is so like the fluid which the ordinary mucous surfiice of the intestine eliminates and sets free from its capillary system, that conditions of the ordinary alimentary tract exist in some Fislies which render needless "â the devclopemeut of the spe- cial accessory surfaces. The pancreas; their whole digestive for which that canal is the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
Size: 1039px × 2405px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
