Arteries of the Trunk. 



427 



Ductus deferens 

 A. testicularis ' | 



I M. transversus abdoiuinis 



, A. circumflexa ilium profunda 



A. epigastrica inferior 

 ^^. rectus abdominis 



A. iliaca communis 



Ramus iliacus 

 a. iliolumbalis 



Ligaiuen- 



tum iuter- 



foveolare 



A. sperma- 

 tica externa 

 A. obturatoria 

 (abnormal) 



Lig. lacunare 

 [Gimbernati 



Falx [aponeurotica] 

 inguinalis 



Eamus pubicus a. _ , 

 epigastricae inferioris 



Eamus pubicus _ 

 a. obturatoriae 



Ramus internus 



Symphysis ossium pubis 



A. iliolumbalis 

 A. iliaca externa 



A. hypogastrica 



V. iliaca externa 



bturatoria (normal, 

 rudimentary) 

 bturatorius 



A. glutaea inferior 



- A. haemorrhoidalis media 

 - Ligamentum sacrospinosiJru 

 A. pudenda interna 



- -M- levator ani 



Trigouum (diaphragma) urogenitale' 



A. penis 



468. Abnormal a. obturatoria dextra in the male. 



(A wiinlow has been cut out of the mm. obturator internus and levator ani.) 



2. A. sacralis lateralis (lateral sacral artery) (see Fig. 463) downward, single or 

 double, upon the facies pelvina of the sacrum, gives off rami s\)inales through the foramina 

 sacralia into the canalis sacralis, and branches to the muscles and to the skin of the back. 



3. A. obturatoria (obturator artery) (see also Pigs. 467, 469471 and 476), frequently 

 arising from the anterior branch, extends fonvard and downward beneath the linea terminalis of 

 the pelvis and beneath the n. obturatorius to the canalis obturatorius, inside which it divides 

 into its terminal branches. In the pelvis, small branches to its surroundings, as well as : 



a) Ramus pubicus. This rims medianward on the posterior surface of the ramus superior 



ossis pubis and anastomoses on the upper surface of the lig. lacunare [Gimbernati] 

 with the ramus obturatorius of the a. epigastrica inferior. By this anastomosis the 

 a. obturatoria arises in about one-third of the cases from the a. epigastrica; it lies in 

 half of these cases upon the lig. lacunare or upon the septum femorale, in the other 

 half, lateralward from the annulus feraoraUs. 



b) Ramus internus, medial from the membrana obturatoria, do^vnward to the ischium. 



