20 



DISSECTION OF THE DOG 



Intestinum c^ctTM. — The caecum is a short spiral or bent tube, the free 

 blind end of which points towards the pelvis. There is considerable variation 



m. longissimus dorsi 

 m. ilio-costalis 



vi. latissimus 

 mm. mter CO stales 



cava caudcdis 



m. obliquu 

 abdominis externus 



Fig. 5. — Transverse section, of the abdomen on a level with the eleventh thoracic vertebra. 

 7, 8, 9, 10, 11 = seventh, eighth, ninth, tenth, and eleventh ribs. 



in the length of this part of the intestine, and also in its form. It lies to the 

 right of the median plane in the umbilical region. 



Colon. — The colon is divided into three parts : (1) The ascending colon 

 (colon ascendens) leaves the csecnm and runs cranialwards to the right of the 

 median plane for a short distance and then turns to the left, thus forming the 



