File:Bailey472.jpg

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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.


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Cite this page: Hill, M.A. (2019, March 26) Embryology Bailey472.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Bailey472.jpg

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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