Anatomical Nomenclature S^BNAX 



M3 



Medulla spinalis 



Fig. 3- 



Median section tlirougli embryo human brain at the end of the first month, show- 

 ing the derivatives of the three primary brain vesicles. The reference numbers indi- 

 cating the various regions correspond with the numbers opposite the names of those 

 regions as given in the scheme on p. 142. (After His.) 



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