IMERXAL PUDIC 



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space between Colles's fascia and the anterior layer of the triangular ligament, 

 bounded by the erector penis externally, the accelerator urinie internally, and the 

 transverse perinscal muscle below. On nearing the ajjcx of this triangle it divides 

 into long slender branches, which are continued along the back of the scrotum, 

 anastomosing with the superficial external pudic branch of the connnon femoral. 

 In this course it is accompanied by the superficial perinaeal nerve. It supplies the 

 contiguous muscles and the integuments of the scrotum. As a rule it gives off the 

 following branch : — 



The transverse perinaeal artery usually arises from the before-mentioned 

 artery. Occasionally it is a direct branch from the jnidic trunk. It courses trans- 

 versely inwards, on the transverse perinaeal muscle, towards the central tendon of 

 the perinteum. su})plying the muscles and integuments of the perinteum, and 

 anastomosing with its fellow of the ojjposite side. 



(4) In the fourth part of its course the pudic artery lies between the two 

 layers of the triangular ligament, close to the ramus of the pubes, in the substance 

 of the compressor urethrse muscle, having the anterior layer of the triangular liga- 

 ment in front and the posterior layer behind. In this situation it gives off the 

 artery of the bulb and the artery of the crus penis, and then continues its course 



Fig. 371. — .Scheme of the Pudic Artery and its Br.\nche.s. 



Subpubic ligament with aperture for 

 dorsal vein of the penis 



Apei hires for dorsal artery and ( 

 nerve of the penis \ 



Crus penis 

 Aperture for artery of t<jr/>us 

 cnvernosiiin 

 Superficial triangular ligament 

 Ischio-eavernosus, or erector peuis 

 Aperture for artery 

 to bulb 

 Urethral aperture 

 Aperture for Cow- 

 per's duct 

 Position of bulb 



Apertures for super- 

 jicial perhiceal 

 vessels and tier re 



Fascia of Colles, 

 turned backwards 



DORSAL NERVE 

 Anterior layer of triangular 

 ligament 

 ■n— Dorsal artery of penis 



vy Deep triangu- 



lar ligament 

 .1 rtery of corpus 

 carfniosiiiu 



Artery to bulb 



/'•i<lic reins 

 DORSAL NERVE 



POSITION OF COWPER'S 



GLAND 

 Internal pudic artery 



Posterior border of 

 perinaeal ledge 

 I junction of trian- 

 gular ligaments 

 ■with fascia of 

 CoUes) 



forwards through the anterior layer of the triangular ligament under the name of 

 the dorsal artery of the penis. 



Tlie branches of the pudic artery in the fourth part of its course are: — (a) 

 The artery of the bullj; {b ) the artery of the crus; and (c) the dorsal artery of the 

 penis. 



(«) The artery of the bulb, often of large size, comes off from the ]»udic soon 

 after that vessel has ))assed between the two layers of the triangular ligament. It 

 runs inwards and slightly upwards behind tlie anterior layer of the triangular liga- 

 ment, embedded more or less in the sul:)Stance of the compressor urethra 

 muscle. On nearing the urethra, it passes forwards through a hole in the 

 anterior layer of the triangular ligament (fig. 371). by the side of the ojiening for 

 the urethra, and, entering the bulb, sui)plies the erectile tissue of the bulb and 

 corpus spongiosum in the way descrilied under the anatomy of the urethra. It 

 gives off a branch, just before piercing the anterior layer of the triangular ligament, 

 to Cowper's glands (fig. 370a). 



The situation of the artery of the bulb should l»e remembered in jierforming the 

 operation of lateral lithotomy. As a rule, the artery is well above the central tendon 

 of the perinseum. If the point of the knife is entered V)elow this spot, and care is 

 taken not to direct its point subsequently too much ujiwardsso that the deei>er part 



