ARTERIES 89 



To outer side, psoas, except at termination, when it is 

 behind. Inner side, vas deferens and lymphatic glands. The 

 left vein is internal to its artery. The right one is at first 

 internal, but at upper part beneath its artery. 



Branches : 



Deep epigastric : from fore part of artery, just above 

 Poupart's ligament, down to ligament, then upwards and 

 inwards between peritoneum and fascia transversalis, being 

 crossed externally by vas deferens near internal abdominal 

 ring; pierces transversalis fascia, and then passes upwards 

 behind rectus to enter sheath under semilunar fold of Douglas ; 

 terminates between rectus abdominis and sheath in anas- 

 tomoses with superior epigastric branch of internal mammary 

 and lower intercostals. 



Branches : 



Cremasteric : accompanies vas deferens, supplying cremaster ; 

 anas, spermatic, artery of vas deferens. 



Pubic : ramifies behind pubis ; anas, pubic of obturator. 



Muscular : to rectus ; anas, superficial epigastric. 



Deep circumflex iliac: from outer side of artery, near 

 Poupart's ligament, directed to anterior superior iliac spine, 

 then on iliac crest, gradually piercing transversalis fascia and 

 muscle and supplying iliacus, etc. ; anas, ilio-lumbar. 



ARTERIES OF LOWER LIMB. 



THE SCIATIC ARTERY. 



Largest branch of internal iliac, except gluteal, passes out 

 through lower part of great sacro-sciatic foramen, between 

 pyriformis and superior gemellus, in company with great 

 sciatic nerve and internal pudic artery, outside the pelvis it 

 lies between the tuber ischii and great trochanter, under 

 gluteus maximus, below which it ends in cutaneous branches 

 to thigh. 



Branches : 



Within the pelvis. Muscular to pyriformis, coccygeus and 

 levator ani. 



Outside pelvis : 



Coccygeal branch : pierces great sacro-sciatic ligament, in- 

 clined inwards, supplies gluteus maximus, integument, etc. 



Comes nervi ischiadici : accompanies great sciatic nerve, 

 finally enters the substance of it. 



Muscular : branches to gluteus maximus and external 

 rotators of thigh ; anas, gluteal, internal^ circumflex. 



