. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ALIMENTARY CANAL OF REPTILES. 437 retracted, fig. 297, A and C, is almost wholly supported thereby, and, when witlidrawn, the cavity of the sheath is occupied by a ductile cellulosity. The bulbous end of the tongue, fig. 296, and fig. 297, a, b, is divided by a transverse ciirved groove into a shorter upper, ib. a, and a longer lower lobe, ib. d, resembling the prehensile part of the Elephant's proboscis; the surface is finely rugous, and bedewed by adhesive secretion. Between the bulb and the base the glossohyal sheath
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ALIMENTARY CANAL OF REPTILES. 437 retracted, fig. 297, A and C, is almost wholly supported thereby, and, when witlidrawn, the cavity of the sheath is occupied by a ductile cellulosity. The bulbous end of the tongue, fig. 296, and fig. 297, a, b, is divided by a transverse ciirved groove into a shorter upper, ib. a, and a longer lower lobe, ib. d, resembling the prehensile part of the Elephant's proboscis; the surface is finely rugous, and bedewed by adhesive secretion. Between the bulb and the base the glossohyal sheath is immediately surrounded by fibrous, degenerating into lax elastic, tissue, covered by the lingual skin, which is thrown into circular ruga3 or rings, in the contracted state (as in fig. 297, A, b, and in c, where this part of the tongue is exposed by divaricating the geniohyoid muscles, c). The tissue of the glossohyal sheath consists chiefly of unstriped muscular fibres, arranged transversely. The longitudinal fibres are those of a pair of ' glossohyoidei,' extending along the sides of the annular exten- sile part, and S2:»reading out at the bulbous part, of the tongue. The circular fibres, strongly contracting, diminish the thickness, increase the length, and, sc[ueezing the smooth supporting style, slip off the elongated part of the tongue from its fore part with a certain 297. Tonsue of the Chameleon, ccxl. jerk. But with this action is associated a more powerful propeller of the weighted bulbous end of the tongue, exercised by the muscles of its bony support. The geniohyoidei, fig. C, c, and A, f,. 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 Owen, Richard, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
