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b central nervous system 



1 brain 



2 spinal cord 



c accessory organs 



1 paraphysis 



2 parietal organ 



3 pineal body 



4 hypophysis 

 d ganglia 



1 cephalic ganglia 



2 spinal ganglia 

 e nerves 



1 cephalic nerves 



2 spinal nerves 



f para- and sympathetic and intramural nervous system 



1 para- and sympathetic nervous system 



2 intramural nervous system 

 g meninges 



Special sense organs 

 a nasal organ 

 b eye 



1 eye 



2 lens 

 c ear 



d lateral sense organs 



Skeleton 



a general subjects 



b embryonic temporary endo-skeleton 



c skull 



d truncal skeleton 



e limbs and wings 



f joints 



Muscular system 



a general subjects 



b skeletal muscles (head, trunk and tail) 



c visceral muscles (head and trunk) 



d muscles of limbs and wings 



Alimentary tract 



a general subjects 



b mouth- and pharyngeal cavities 



c intestinal tract 



d proctodaeum 



e salivary glands 



f liver 



g pancreas 



Respiratory organs 



a general subjects 



b external gills 



c internal gills 



d lungs and larynx 



