DISSECTION OF THE DOG 



37 



reaches Bomewhat beyond the edge of the ribs, and is, therefore, visible as 

 Boon as i be abdomen is opened. 



The spleen may be described as possessing three Burfaces, three borders, and 

 iw>> extremities. The lateral surface is applied to tin- abdominal wall and is 

 consequently convex in a dorso- ventral direction. Since the dorsal pari <>l' 

 this surface (its into the groove formed by the vertebral bodies and the ribs, 

 the convexity is most marked in this region. The other two surfaces look towards 



r *> culi 



Ductus pancreaiicus accessorius 



Duodinum 



Fro. 12. — Outline of the stomach, 



tlie median plane and are concave. The more cranial is applied to the stomach ; 

 whereas the more caudal is in contact with the left kidney and the intestines. 



The cranial and caudal borders, bounding the lateral surface, are thin. 

 The medial border is much less prominent, but is important since it is the 

 seat of the hilus of the spleen (hilus lienis), by which the blood-vessels and 

 nerves enter the organ. This border, moreover, has the gastro-lienal ligarru at 

 (lig. gastro-lienale) attached to it. 



Ventkicui-Us. — The stomach is a saccular dilation of the alimentary canal 



d :5 



