FIGURE 101 



101 Schema of venous plexuses of left side in lower cervical region of cat embryo 

 between 13 mm. and 14 mm. crown-rump measure in transverse section. 



1 Sympathetic nerve. 



8 Oesophagus. 



9 Trachea. 



16 Dorso medial somatic venous tributaries. 



17 Prevertebral venous plexus, 



18 Feritracheal venous plexus. 



19 Suprathymic venous plexus. 



20 Subthymic venous plexus. 



21 Thymus. 



22 Vagus. 



23 Left carotid artery. 



24 Thyrocervical artery. 

 20 Common jugular vein. 



