.Ml 



////: . i// //:/, //>. 



Fig. 276. 



2. Internal Iliac Arteries of the /'/</. 



Two single branches, originating one nbove Ihe other. arise from tin- extremity of 

 the aorta, l>et \\cen the two internal iliac arteii.-< ; on.- di\id..- aim ->t at oner in; 

 lateral branches, which go to right and left lx>m>ath the ilia.-u . an. I are tli r. pre<enia- 

 tives of the iliaeo-muteuhtr urttrie* of tin- Horse: the other, or tacra m"//i. placed in the 



mi. Idle Hue. pr.iend- backward* on the 

 in., li.ir face of the OH sacrum, ami ei in- 

 stitutes Ihe i-n -i- i/i it nl nrli />>, after giving 



off, at about 1 mchesfriim its origin, two 



lateral branches, traces of the literal 



!>ii'-iiil urtt ri'-f, \vliicli t'uniish the spinal 

 r.imuscuh s of the sacral region. 



The Him- tni'tlc m-iir it- <>r iriii 

 otV the umbilical artery, is directed l,a"K 

 towards tlie great sciatic notcli, there 

 liei.'iehes gluteal bran. -he-;, and is pro- 

 longed beyond the notch to the external 

 surface of the great i.-draMc liirnincnt in 



forming th.- i///i nil /i/tiHr arltry. 



The latter emits, before leaving the 

 pelvio cavity, a 1< mg hxmorrhoidal artery, 

 that creeps hick by the side of the rectum, 

 to bo distributed to the posterior extre- 

 mity of that intestine and the adjoining 

 gen ito-urnnry organs. Without the pel- 

 vis, it abandons some gluteal branches, 

 the most considerable and posterior of 

 which represent the ischialic artery of 

 8olipeds. It then re-enters the cavity 

 of the pelvis, and terminates at the base 

 of th! penis by forming the edveraotu 

 find dorsal arteries of that organ. 



3 Internal Iliac A rteries of Carnivora. 



The internal iliac arteri.-s in the Car- 

 nivoru result from the bifurcntinn ..f an 

 nrtorial trunk, that prolongs t!:e norta 

 beyond the origin of the external ili:.< .-, 

 as far as t!ie first intersacral articula- 

 tion. 



Tho pelvic trunk of the Dog at first 

 transmits the umbilinil nrli-nj, which is 

 remarkable for its small calibre, nnd the 

 ABDOMINAL AORTA, WITH ITS BRANCHES, IN flexuosities it describes before rtachin" 



MAN. the bladder. 



1, Phrenic arteries; 2, Coeliac axis; 3, Gastric Then the internal iliac courses for 1 or 

 artery; 4, Hepatic artery, dividing into right 1J inches behind, and to the inside of, Ihe 

 and left hepatic branches; 5, Splenic artery, pelvi-crural venous trunk, dividing into 

 passing outwards to the spleen; 6, Supra- two branches at the entrance t<> the pelvis. 

 renal artery of right side; 7, Right renal One of these branches goes towards 

 artery longer than the left, passing outward the viscera contained in the jx hie 

 to right kidney; 8, Lumbar arteries; 9, Su- cavity; this is the internal pudic art rg. 

 lrior mesenteric artery; 10, The two sper- It passes backwards, turns the Utchia] 

 matic arteries; 11, Inferior mcsenteric artery ; nrch, and terminates in the cavernous 

 12, Sacra media; 1H, Common iliacs; 14, Right and dortal arterits of the penis, after 

 internal iliac; 15, External iliac; 16, Kpigas- furnishing vesical, haemorrhoidal, and 

 trie artery; 17, Circumflexa ilii ; 18, Common urcthral branches, as well as the uterine 

 femoral artery, dividing into superficial and artery of the female. The latter is vi i\ 

 deep femoral. voluminous, and is placed in the sub- 



stance of the broad ligament, above th 



small curvature of the uterine cornu, whence it is directed forward to the <>\ary, 



where it meets the utero-ovaiiun artery, after emitting numerous collateral branches, 



remarkable for the richness of the vascular network they firm in the walls of the uterus. 



The second branch of the internal iliac artery resembles the mlitm-ntl nrh-ii/ and its 



