. Smell, taste, and allied senses in the vertebrates . Senses and sensation; Vertebrates. VOMERO-NASAL ORGAN 95 of smell located in the respiratory passage and an entirely independent vomero-nasal organ. The latter, in the form of a blind sac, opens into the cavity of the mouth. This peculiarity is probably dependent upon the growth of the hard palate in reptiles whereby a new adjustment between the nasal cavity and the mouth is brought about. In mammals the vomero-nasal organ also shows much diversity. It is apparently best developed in the lower. —Transverse section of the snout of a
. Smell, taste, and allied senses in the vertebrates . Senses and sensation; Vertebrates. VOMERO-NASAL ORGAN 95 of smell located in the respiratory passage and an entirely independent vomero-nasal organ. The latter, in the form of a blind sac, opens into the cavity of the mouth. This peculiarity is probably dependent upon the growth of the hard palate in reptiles whereby a new adjustment between the nasal cavity and the mouth is brought about. In mammals the vomero-nasal organ also shows much diversity. It is apparently best developed in the lower. —Transverse section of the snout of a young frog snowing the pajtial division of the nasal cavity into a lateral or olfactory portion (o) and a median or vomero-nasal portion (v). forms, such as the Australian duckbill Ornithorhynchus, and it is rudimentary in such groups as the primates including man. In general it has the form of a blind sac that opens usually by means of the naso-palatine duct (Stenson's duct) into the mouth, a relation that is prob- ably reminiscent of its original connection with the primitive choana of which the naso-palatine duct may be regarded as a trace. Less commonly it opens directly by its own duct into the nasal cavity. This condition obtains in certain rodents such as the rabbit, guinea pig, rat, and mouse, and in certain primates including 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 Parker, George Howard, 1864-1955. Philadelphia ; London : J. B. Lippincott Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsensesa, bookyear1922
