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HANDBOOK OF PHYSIOLOGY. 



upper third of the septum of the nose, the superior turbinated or spongy 

 bone, the upper part of the middle turbinated bone, and the upper wall 



FIG. 374. Nerves of the septum nasi, seen from the right side. ?.!, the olfactory bulb; 1, the 

 olfactory nerves passing through the foramina of the cribriform plate, and descending to be distrib- 

 uted on the septum; 2, the internal or septal twig of the nasal branch of the ophthalmic nerve; 3, 

 naso-palatine nerves. (From Sappy, after Hirschfeld and Leveille.) 



of the nasal cavities beneath the cribriform plates of the ethmoid bones 

 (Figs. 374 and 376). The olfactory region is covered by cells of cylin- 



FIG. 375. 



FIG. 376. 



FIG. 375. Section through the olfactory mucous membrane of the new-born child, a, non-nu- 

 clear; and 6, nucleated portions of the epithelium; c, nerves; dd, glands, marked out by Schultze as 

 Bowman's. (M. Schultze.) 



FIG. 376. Nerves of the outer walls of the nasal fossae. 3/5. 1, network of the branches of the 

 olfactory nerve, descending upon the region of the superior and middle turbinated bones ; 2, ex- 

 ternal twig of the ethmoidal branch of the nasal nerves; 3, spheno-palatine ganglion; 4, ramifica- 

 tion of the anterior palatine nerves; 5, posterior, and 6, middle divisions of the palatine nerves; 7, 

 branch to the region of the inferior turbinated bone; 8, branch to the region of the superior and 

 middle turbinated bones; 9, naso-palatine branch to the septum cut short. (From Sappey, after 

 Hirschfeld and Leveille.) 



drical epithelium, prolonged at their deep extremities into fine branched 

 processes, but not ciliated; and interspersed with these are fusiform 



