446 



BRANCHES OF INTEENAL ILIAC ArvTERY, 



the ecrotum and the upper part of the perina?um. Given off from the pudic 

 arteiy in front of the ha^mon-hoidal branches, it turns upwards parallel with the 

 pubic arch, crosses the transverse muscle of the periniiEum. and runs forwards 

 under cover of the superficial fascia, between the erector penis and accelerator 

 urinffi muscles, supplying both. In this course the artery gi-adually becomes 

 superficial, and is finally distributed to the skin of the scrotum and the dartos. 

 It not unfrequently gives off the following branch. 



VW. 2SC. Fig- -S'^. — Dissection op 



° THE PeKIN-EUM in A 



Young Male Subject 

 SHOWING the Blood- 

 vessels, &c. (A.T.) J 



This drawing is made 

 from a preparation upon 

 a modification of the plan 

 of R. Quain's 61st and 

 6'2iid Plates. The right 

 side shows a superficial, 

 the left a deeper view. 



a, the anus, with a 

 part of the integument 

 surrounding it ; b, left 

 half of the bulb of the 

 urethra exjiosed by the 

 removal of a part of the 

 bulbo-cavernosus muscle ; 

 c, coccyx ; d, right tube- 

 rosity of the ischium ; c, 

 c, superficial perineal fas- 

 cia passing forward u^jon 

 the scrotum ; /, right 

 ischio-rectal fossa, from 

 which the fat and fascia 

 have not been removed ; 

 g, gluteus maximus mus- 

 cle ; 1, placed on the 

 right transversus perinasi 

 muscle, points to the su- 

 perficial perineal artery 

 as it emerges in front (in 

 this case) of the muscle ; 

 1', placed on the left side 

 on the surface of the tri- 

 angiilar ligament near its 

 reflection into the super- 

 ficial fascia, points to the 

 superficial perineal artery 

 cut short ; 2, on the right 

 ischio-cavernosus muscle, 

 points to the superficial perineal arteries and nerves passing forward ; "2', the same on the 

 3eft side, the vessels and nerves having been divided there ; 3, on the triangular ligament 

 of the right side points to the transverse perineal branch of the superficial perineal 

 a,rtery ; 4, on the left tuberosity of the ischium, points to the pudic artery deep in the 

 ischio-rectal fossa ; 5, 5', the inferior ha-morrhoidal branches of the pudic arteries and 

 nerves ; 6, on the left side, placed in a recess from which the triangular ligament or 

 anterior layer of the subpubic fascia has been removed to show the continuation of the 

 pudic artery, its branch to the bulb, and one of Cowper's glands. 



(f) The transverse perineal artery, a very small vessel, is frequently a branch 

 of the preceding, but in some instances arises from the pudic arteiy. It crosses 

 the perinsemn, and terminates in small branches which are distributed to the 



