INTERNAL PUDIC ARTERY. 



345 



deep perineal fascia, and runs forward across the transversus perinei 

 muscle, and along the groove between the accelerator urinse and 

 erector penis to the septum scroti, upon which it ramifies under the 

 name of arteria septi. It distributes branches to the scrotum, and to 

 the perineum in its course forwards. One of the latter, larger than 

 the rest, crosses the perineum, resting on the transversus perinei muscle, 

 and is named the transversalis perinei. 



The Artery of the bulb is given off from the pudic nearly opposite the 

 opening for the transmission of the urethra ; it passes almost trans- 

 versely inwards betwen the two layers of the deep perineal fascia, and 

 pierces the anterior layer to enter the corpus spongiosum at its bulbous 

 extremity. It is distributed to the corpus spongiosum. 



Fig. 127.* 



* The arteries of the perineum ; on the right side the superficial arteries 

 are seen, and on the left the deep. 1. The penis, consisting of corpus spon- 

 giosum and corpus cavernosum. The crus penis on the left side is cut 

 through. 2. The accelerators urinse muscles, enclosing the bulbous portion 

 of the corpus spongiosum. 3. The erector penis, spread out upon the crus 

 penis of the right side. 4. The anus, surrounded by the sphincter ani 

 muscle. 5. The ramus of the ischium and os pubis. 6. The tuberosity of 

 the ischium. " The lesser sacro-ischiatic ligament, attached by its small 

 extremity to the spine of the ischium. 8. The coccyx. 9. The internal 

 pudic artery, crossing the spine of the ischium, and entering the perineum. 

 10. External hsemorrhoidal branches. 11. The superficialis perinei artery, 

 giving off a small branch, transversalis perinei, upon the transversus peri- 

 nei muscle. 12. The same artery on the left side cut off. 13. The artery of 

 the bulb. 14. The two terminal branches of the internal pudic artery; one is 

 seen entering the divided extremity of the crus penis, the artery of the corpus 

 cavernosum; the other, the dorsalis penis, ascends upon the dorsum of the 

 organ. 



