ANATOMY AND PHYSIOLOGY OF THE BRAIN 369 



of the superior turbinated process of the ethmoid and 

 corresponding portion of the nasal septum. These 

 filaments represent the axones of the olfactory cells 



FIG. 131 



Frontal lobe. 



Occipital 

 lobe. 



Base of brain, showing superficial origin of cranial nerves. 



and pass through the cribiform plate of the ethmoid 

 bone to join the under surface of the olfactory bulb, 

 which rests on the cribriform plate, and is the oval mass 

 of a grayish color that forms the anterior extremity 

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