SUPERFICIAL PERINEAL ARTERY. 



245 



THE SUPERFICIAL PERINEAL ARTERY, arising at the fore part 

 of the ischio-rectal fossa, runs over or under the transverse 

 muscle, and beneath the superficial fascia, to the back of the 

 scrotum, where it ends in flex nous branches. In its course through 

 the perineum the vessel supplies offsets to the muscles beneath ; 

 and in the scrotum it anastomoses with the external pudic branches 

 of the femoral artery. Sometimes there is a second perineal 

 branch. 



The TRANSVERSE ARTERY OF THE PERINEUM arises from the 

 preceding, and is directed transversely to the middle of the perineal 



Superficial 

 perineal 



ends i 

 scrotum, 



and supplie 



muscles. 



Transverse 

 artery. 



FIG. 93. THE ANTERIOR HALF OF THE PERINEUM (ILLUSTRATIONS OF 

 DISSECTIONS). 



Muscles, (L-c. : 

 A. Ejaculator urinae. 



B. Erector penis. 



c. Transversus perinei. 



D. Levator ani. 



E. Gluteus maximus. 

 a. Cms penis. 



H. Urethra. 



Arteries : 



a. Transverse perineal. 



b. Superficial perineal. 



1. Inferior hsemorrhoidal. 

 2 and 3. Superficial perineal. 

 4. Inferior pudendal. 



space, where it is distributed to the integuments and the muscles 

 between the urethra and the rectum. It anastomoses with the 

 one of the opposite side. 



Branches of veins accompany the arteries, and open into the Veins with 

 trunk of the pudic vein ; those with the superficial perineal artery 

 are plexiform at the scrotum. 



NERVES (figs. 92 and 93). Three nerves run forwards to the Cutaneous 

 scrotum on each side, viz., the inferior pudendal of the small sciatic, scrotum, 

 and two superficial perineal branches of the pudic nerve. 



