FROG. 103 



(aaa) The lingual vein : from the 



tongue. 

 (bbb) The inferior maxillary vein : from 



the lower jaw. 

 (bb) The innominate vein : formed by 



(aaa) The internal jugular vein : from 



the brain, etc. 

 (bbb) The subscapular vein : from the 



muscles of the shoulder. 

 (cc) The subclavian vein : formed by 



(aaa) The brachial vein : from the fore- 

 limb. 

 (bbb) The musculo - cutaneous vein 



from the skin, etc. 



(c) The left superior cava : similar to the right. 

 E. Yein Opening into the Left Auricle, 

 (a) The pulmonary vein : formed by" the union 

 of the right and left pulmonary veins. 

 Each pulmonary vein runs along the 

 inner side of its lung. 

 Diagram of the veins ! 

 4. The Arteries. 



Distend the oesophagus by inserting the rubber 

 top of a pipette or a roll of paper, and thus 

 stretch the arteries. 



Note the division of the truncus arteriosus 

 into two branches, and that each of these 

 is subdivided into three aortic arches : 



