THE ARTEKIES. 



235" 



y. The inferior mesenteric artery to the lower part of the intestine. 

 All the arteries to the intestine course in lympli-sj:)aces. 



b. The urinogenital arteries [Arteriae nrino-genitales), (Fig. 

 154 vff) are four to six small arteries arising- from the ventral 

 surface of the aorta between the kidneys : they immediately divide 

 into right and left branches to supply the kidneys, fat-bodieSj 

 reproductive organs, and their ducts (see kidney). 



c. The lumbar arteries (Arteriae lunibales), are small paired vessels 

 to the neighbouring muscles, and send branches through the in- 

 tervertebral foramina to the vertebral canal. Sometimes these 

 arteries arise from the Art. spinalis or Art. vertetjralis, etc. ; in the 

 former case they pass outwards from the vertebral canal to the sur- 

 rounding* structures. 



d. The haemorrhoidal artery [Art. viesenterica inf. s Art. hae- 

 morrhoidalis superior') is a small median artery running from the pos- 

 terior end of the aorta to the large intestine. 



Fig- 154- 



6. Bifurcation of the aorta. The 

 iliac arteries [Arteriae iliacae commu- 

 nes). Opposite the middle of the uro- 

 style the aorta bifurcates to form the 

 iliac arteries; each of these courses 

 on the corresponding sciatic plexus to 

 the thigh, beyond which it is con- 

 tinued as the sciatic artery. The 

 branches of the iliac artery are : — 



a. The vesieo-epigastric artery 



[Arieria ejngastrico-vesicalis), (Fig. 155 

 ev) ; it arises near the bifurcation, 

 passes outwards on the plexus, and 

 divides into two branches : — 



(i) The epigastric artery [Arteria 

 epigastrica) [e) immediately gives off 

 a recurrent branch to the iliac bone 

 and the M. ilio-coccygeus ; it then 



continues to the ventral muscles of the abdominal wall, where it 

 runs forwards on the deeper surface of the M. oliliquus internns, and 

 is distributed more especially to this muscle. 



(2) The hypogastric artery [Arteria vesicalis) [v) winds downwards 

 around the sciatic plexus to reach the mesentery, along which it 

 courses to the bladder, where it forms a rich anastomosis. 



The urinogenital arteries. 



A Dorsal iiorta. 



H Testis. 



N Kidney. 



up Urinogenital arteries. 



