. On the anatomy of vertebrates [electronic resource] . is of unusual dimensions: it extends from the meatus audi- 1 cxvn. p. 29. SALIVARY GLANDS OF MAMMALS. 397 torius along the neck, and upon the anterior part of the thorax :it is a broad, flat, oblong lobulated body, narrowest at its anteriorextremity, from which the wide duct emerges. When the duct 302. Submaxillary glands, Echidna setosa; nat. size. has reached the interspace of the lower jaw, it dilates, and thendivides into eight or ten undulating branches, which subdivideand ultimately terminate by numerous orifices upon the mem- 398 A
. On the anatomy of vertebrates [electronic resource] . is of unusual dimensions: it extends from the meatus audi- 1 cxvn. p. 29. SALIVARY GLANDS OF MAMMALS. 397 torius along the neck, and upon the anterior part of the thorax :it is a broad, flat, oblong lobulated body, narrowest at its anteriorextremity, from which the wide duct emerges. When the duct 302. Submaxillary glands, Echidna setosa; nat. size. has reached the interspace of the lower jaw, it dilates, and thendivides into eight or ten undulating branches, which subdivideand ultimately terminate by numerous orifices upon the mem- 398 ANATOMY OF VERTEBRATES. branous floor of the mouth. This modification of Whartonsduct appears to be unique. The large size of the glands andthe mode in which the secretion is spread over the floor of themouth relate to the lubrification of the long, slender, and exten-sible tongue, and to its fitness as an instrument for obtaining theinsect food of the spiny Monotreme. The salivary glands in the carnivorous Dasyures consist of asmall parotid and a large submaxillary gland on each side. Theydo not agree with the dogs in having the zygomatic glands. Thesubmaxillary is placed in front of the neck, so that its duct passeson the dermal side of the tendon of the biventer maxillae, andterminates half an inch from the symphysis menti. There isa thick row of
Size: 1430px × 1748px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
