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==Fig. 472. From a section through the head of a human embryo of 28 mm== | |||
Peter. | |||
Showing the nasal septum, the nasal cavities, the oral cavity, and the palatine processes. | |||
Jacobson's organ arises at the beginning of the third month as a small outpocketing of the epithelium on the lower anterior part of the nasal septum (Fig. 472). This evagination grows backward as a slender sac along the nasal septum for a distance of several millimeters and ends blindly. In the adult the sac degenerates and often disappears. In some of the lower Mammals Jacobson's organ develops to a greater degree, and some of the epithelial cells send out processes which pass to the olfactory lobes. | |||
{{Historic Disclaimer}} | |||
[[Category:Historic Embryology]] [[Category:Human]] [[Category:Smell]] [[Category:Respiratory]] |
Revision as of 11:53, 31 March 2012
Fig. 472. From a section through the head of a human embryo of 28 mm
Peter.
Showing the nasal septum, the nasal cavities, the oral cavity, and the palatine processes.
Jacobson's organ arises at the beginning of the third month as a small outpocketing of the epithelium on the lower anterior part of the nasal septum (Fig. 472). This evagination grows backward as a slender sac along the nasal septum for a distance of several millimeters and ends blindly. In the adult the sac degenerates and often disappears. In some of the lower Mammals Jacobson's organ develops to a greater degree, and some of the epithelial cells send out processes which pass to the olfactory lobes.
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers) |
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