DERIVATIVES OF THE NEURAL TUBE 



x 



< 

 o 



H-J 

 <1 



tf 

 & 



a 

 x 



A. 



MYELON 

 (spinal cord) 



a 



gd 



- 



fl. KHOMBEXCEPIIALON 

 (rhomboid brain) 



1. Sacral 



region 



2. Lumbar 



region 



3. Thoracic 



(dorsal) 

 region 



4. Cervical 



region 



(a) MYELENCEPHALON f 5. Medulla 



II. MESENCEPHALON 



(mid brain) 



(after brain) 



(b) METENCEPHALON 



(hind brain) 



(c) MESENCEPHALON 

 (mid brain) 



W 



O 



^ 



w 



PQ 



III. PROREXCEPHALON 

 (fore brain) 



(d) DIENCEPHALON 



(interbrain or 

 'tween brain) 



() TELENCEPHALON 

 (end brain) 



594 



\ Oblongata 



6. Pons Varolii 

 1. Cerebellum 



8. Region of 



the crurae 

 cerebri 



(brain stem) ; 

 corpora 

 quadrigemina j 



9. Region of 



the optic 

 thalami 

 (basal nuclei) 



10. Optic tract 



(primitive opt: 

 evaginations) 



11. Posterior 



lobe of 



hypophysis 



cerebri 



12. Pineal body 



13. Cerebral 



cortex 

 (pallium) 



14. Corpora 



striata 



15. Olfactory lobes 



