170 EQUINE ANATOMY. 



arches from which a number of branches start to rami, 

 fy in the intestinal tract. The first anastomoses with 

 the duodenal, and the last with the ileo-coecal artery. 



h. Right fasciculus. — A short trunk which soon di- 

 vides into four branches : 



1. Ileo-ccecal. — Anastomosing with the last artery 

 of the left fasciculus. 



2. Two ccECAL. — Divided into internal or superior, 

 and external or inferior. Both located in the fissure 

 of the coecum, running down to the apex, where their 

 divisions anastomose after sending collateral branches 

 to the organ. At its origin the external coecal gives 

 off the artery of the coecal arch following the concavity 

 of the arch, where it disappears. 



3. HiGHT OR direct COLIC. — Ruus iu the right flex- 

 ure of the colon to the pelvic curvature, where it anas- 

 tomoses with the left colic, furnishing collateral 

 branches to that portion of the large intestine. 



c. Anterior fasciculus. — Furnishes two principal 

 trunks : 



1. Left colic or retrograde. — Acting to the left 

 portion of the large colon as the direct colic does for 

 the right, and anastomosing with it at the pelvic curv- 

 ature. 



2. First artery of the small colon. — Placed in 

 the posterior fold of the small mesentery, to anasto- 



