380 



DR. C. F. SONNTAG ON THE ANATOMY. 



artery (M.C.A) supplies the left part of the transverse colon and 

 the hepatic flexure. It anastomoses with the right colic branch 

 of the superior mesenteric artery, and the ascending branch of 

 the left colic arteiy. The left colic artery (L.C.A), supplying the 

 descending colon, anastomoses with the mid colic artery and 

 branches to the iliac colon. The superior luBmorrhoidal artery 

 (S.H.A), from the right division of the parent artery, goes down 

 to the pelvis to supply the rectum and anus. It is i-elatively 



Text-figure 39. 



nCA. 



Are. A. 



The arterial supplj' to the pectoral extremity. A: arteries of the forearm and 

 hand; B: arteries of the arm; A.I.O and A.I.A : anterior interosseous 

 artery ; D.C : descending branch of the circumflex arteries ; M.A : median 

 artery. Other letters in text. 



larger than in Man, and replaces branches of the hypogastric 

 artery. It divides into two terminal branches ; the anterior 

 supplies the rectum and anus, and the posterior one is limited 

 to the rectum. 



Renal Arteries : — The left vessel (text-fig. 40 D) gives ofi" supra- 

 renal arteries (s.r.a), branches to the renal capsule (r.c.a), two 

 small arteries which anastomose with the lumbar arteries (l.a.a) 

 and the left ovarian artery (l.o.a). It ends by dividing into two 



