NERVOUS SYSTEM 



93 



The largest cell bodies forming the gasserian ganglion in- 

 crease in diameter from birth to about puberty, reaching their 

 maximum size at 80-100 days, after which they remain ap- 

 proximately constant — table 54. 



TABLE 52 



Dath on the diameter in n of the largest myelinated fibers and the axis cylinders 



taken from three different branches and the fifth nerve root, arranged 



according to age 



The neurons in the gasserian ganglion are larger, have a 

 higher nucleus-plasma ratio, and mature earlier than do those 

 in the ganglion of the seventh cervical nerve. The fibers from 

 the cells of the gasserian ganglion are absolutely less in diameter 

 than those from the seventh cervical ganglion, despite the fact 

 that the cell bodies of the former are larger. These differences 



