32 F. W. THYNG 



Spinal cord 54 



Cranial nerves 54 



NN. olfactorii 54 



N. opticus 54 



N. oculomotorius 54 



N. trochlearis 54 



N. trigeminus 55 



N. abducens 56 



N. facialis 57 



N. acusticus 57 



N. glossopharyngeus 58 



N. vagus 59 



N. accessorius 63 



N. hypoglossus 64 



Spinal nerves 65 



NN. cervicales 65 



Sense organs 68 



Eye 68 



Ear 68 



Nose 69 



Vascular system 70 



Heart 1^ 



Sinus venosus '■ '" 



Right atrium 70 



Right ventricle 71 



Left atrium 71 



Left ventricle 71 



Arteries 72 



Systemic derivatives of the aortic arches 72 



Pulmonary arteries 76 



Derivatives of the occipital and cervical segmental vessels 76 



Parietal arteries of the trunk 78 



Visceral arteries 79 



Iliac arteries 82 



Veins 83 



Anterior and common cardinal system 83 



Posterior cardinal system 87 



Portal system 90 



Pulmonary veins (see left atrium) . 



Lymphatics 91 



Saccus jugularis sinister 91 



Saccus jugularis dexter 91 



Saccus mesentericus 92 



Cisterna chyli 92 



Sacci lymphatici posteriores 92 



