DISSEI I ION OF THE Doc 



I I 



umbilical artery (a. umbilicalis) very often arises from the visceral pari of 

 the hypogastric artery instead of from the main trunk; (2) the mhldL Itcrmor- 

 rhoidal artery (a. h&morrhoidalis media) fur the supply of the rectum and the 

 region <»f the amis ; (3) the perineal artery (a. perinei), a small branch ending 

 in the perineum; (4) arteries to the penis: (a) the dorsal artery of tlu penis 

 (a. dorsalis penis) follows the dorsal vein and nerve along the dorsum of the 

 penis to the glans ; (6) the deep artery of the /urn's (a. profunda penis) ent< ra 



the corpus eavernosum penis; (r) the artery of tin urethral bvXb (a. lnilbi 



urethra-) the laxgesl <>f the tliree — sinks into the corpus eavernosum urethra,-. 



The parietal part (pars parietalis) of the hypogastric artery is larger tlian 



the visceral division of this vessel, and passes along the wall of the pelvis 



aa. lumbal es 



Aorta_ 



a mesenterica caudaiis 

 a. colica sinistra - 



a. hypogostrica 



i a. sj oralis media 

 i i 



a. ilio-lumbalis 



a. glutoea cranialis 



a. hcemorrhoidalis 

 cranialis 



a. circumflexa ilium 

 profunda 



a. iliaca externa 



a. can ■ alts 



sn/icr licta.it 



oca caudaiis 



■ a. iiojmorrhoidahs media 



■ a. perinei 



a. profunda penis 



a. bulbi urelhrx 

 alii /icnis 



a. dfferentialis ' ' 



a. vesicalis cranialis 1 



a. umbdiciiis 



a. pudenda interna 

 a. profunda femoris 



u. pudenda externa 



a. epigaitrica caudah* 

 Fin. 42. — Diagram of the external iliac and hypogastric arteries. 



at a more dorsal level. Crossing first the medial face of the ilium and then 

 the medial face of the piriformis and superficial gluteal muscles, it ends as 

 the caudal gluteal artery previously examined in connection with the other 

 deep gluteal structures. 



The vessels arising from the parietal part of the hypogastric artery are 

 the following : (1) The ilio-lumbar artery (a. ilio-lumbalis) arises close to the 

 origin of the pars parietalis, or even from the main stem of the hypogastric 

 artery itself, and is expended in the psoas minor, ilio-psoas, sartorius, tensor 

 fasciae lata? and middle gluteal muscles ; (2) arising at the oral border of the 

 piriformis muscle, the cranial gluteal artery (a. glutaea cranialis) passes into 

 the gluteal region along with the sciatic nerve ; (3) branches are contributed 

 to the internal obturator, levator ani, coccygeus and piriformis muscles 

 (rami musculares) ; (4) the superficial lateral caudal artery (a. caudaiis lateralis 



