96 EQUINE ANATOMY. 



Divide into superior branch to lumbar muscles, cord, and 

 inferior to abdominal and psoas muscles. 



Sacra media. 



A single vessel arising at bifurcation of aorta, passes along in- 

 ferior face of sacrum and gives branches to parts in vicinity. 



INTERNAL ILIAC. 



From aorta to insertion of small psoas, dividing into obturator 

 and ilia-femoral. 



Umbilical. 



A cord to top of bladder, giving off some vesical branches. 



Internal pudic, to neck of bladder, bulb of urethra, prostate and 

 seminal vesicles. In female to vagina and uterus. 



Lateral sacral. 



Passes backward alongside of sacrum, gives off middle and 

 lateral coccygeal and ischiatic branches. 



Ilio-lumbar, to sacro-iliac joint and muscles. 



Gluteal, emerges from pelvis by great sciatic notch, and sup- 

 plies gluteal muscles. 



Obturator, emerges from pelvis by obturator foramen, and 

 sends branches to muscles, bladder and the artery of the corpus 

 cavernosum, giving off the posterior dorsal artery of the penis. 



Ilio-femoral. 



Passes out of the pelvis with the iliacus muscle, and ends in the 

 muscles of the thigh. 



EXTERNAL ILIAC. 



From end of aorta to Poupart's ligament, where it ends in the 

 femoral. The vein lies to the inner side. 



Branches. 



Small testicular. See before. 



Circumflex iliac, passes outward and divides into an anterior 

 branch to the abdominal muscles and a posterior to the iliac mus- 

 cles and skin of thigh. 



FEMORAL. 



From Poupart's ligament to the opening in the great adductor 

 of the thigh, where it becomes the popliteal. 



Branches. 



Prepubic, lies on anterior face of Poupart's ligament, and 



