THE ARTERIES 



639 



branches (Aa. jejunalps), wliicli form a 

 scries of anastomotic arclu\s in the 

 mesentery near the bowel. 



Two phrenico-abdominal arteries 

 (Aa. phrenica) caiulales) come off from 

 the aorta behind the anterior mesenteric, 

 and divide into phrenic and abdominal 

 branches. Each phrenic artery diverges 

 from its fellow in descending on the ab- 

 dominal surface of the corresponding crus 

 of the diaphragm to the sternal part. The 

 inner branches anastomose with those of 

 the opposite artery, the outer branches 

 with intercostal arteries chiefly. The ab- 

 dominal arteries give branches to the lum- 

 bar muscles, the renal fat and capsules, 

 and ramify in the oblique al;)dominal 

 muscles. 



The renal and spermatic arteries 

 offer no special features. 



The utero-ovarian artery divides 

 near the ovary into tlu'ee or four 

 l:)ranches which supply the ovary and 

 uterus, anastomosing with the uterine 

 artery. 



The posterior mesenteric artery is 

 small. It divides into two branches 

 which supply the terminal part of the 

 colon and the anterior part of the 

 rectum. 



The circumflex iliac artery usually 

 arises from the terminal jiart of the 

 aorta. 



The external iliac artery usually 

 gives off no collateral l^ranches. 



The femoral artery has the usual 

 course. The dee]) femoral gives off the 

 posterior abdominal and external pudic 

 arteries by a very short common trunk 

 or separately. In the female the ex- 

 ternal pudic divides into anterior and 

 posterior ])ranches; the former runs for- 

 ward, supplies branches to the inguinal 

 lymph glands, the mammary glands and 

 skin, and anastomos(^s with the mam- 

 mary ])ranch of tlie internal thoracic 

 artery; the posterior branch pursues a 

 flexuous course between the thighs to 

 the vulva, where its terminal branches 

 anastomose with the intc^rnal pudic 

 artery. The anterior femoral may arise 

 by a short common trunk with the 

 external circumflex. The former, ac- 

 companied by the anterior branch of the 



Fig. 492. — Arteries or Pelvic 

 Li.MB OF Dog, Intern \i ^ ii- w 



a. Abdominal aoita, b, fe- 

 moral; c, c', deep femoral; d, pos- 

 terior abdominal; e, external pudic; /, internal cir- 

 cumflex; f/, anterior femoral (accompanied by an- 

 terior branch of femoral nerve); h, external circum- 

 flex; (', k, muscular branches; /, articular branch; 

 m, saphenous; n, o, ])lantar and dorsal branches of 

 saphenous; q, sa]ihenous nerve; r, obturator nerve; 

 7, ilio-i)soas; 5, ilium; ,^, gracilis; 4, seinitendinosus; 

 0, adductor magnus; G, adductor longus; 7, quadri- 

 ceps femoris; 8, sartorius; 9, semimembranosus; 10, 

 gastrocnemius; / 7 , tibialis anterior; 12, tibia. (Ellen- 

 berger-Baum, Anat. d. Hundes.) 



