The Infundibuliform Fascia (tunica vaginalis communis [testis et funiciili sper- 

 matici]) is a thin layer, which loosely invests the cord; it is a continuation 

 downward of the transversalis fascia (see page 418). 



The Tunica Vaginalis is described with the testes. 



Skin 



Dartos tunic 

 Intercrural fa,scia 

 Cremasteric fascia 



Infundibuliform fascia 

 Parietal tunica vaginalis 

 Visceral tunica vaginalis 



Tunica albuginea 

 A lobule of the testis 



A septum 



Mediastinum testis 

 Sinus of epididymis 

 Spermatic rein 

 Epididymis 

 Ductus deferens 

 Artery to ductus 

 Internal spermatic artery 

 Internal muscular tunic 



FIG. 1 145. Transverse section through the left side of the scrotum and the left testis. The sac of the tunica 

 vaginalis is represented in a distended condition. (Diagrammatic.) (Delepine.) 



Vessels and Nerves. The arteries supplying the coverings of the testes are: the superficial 

 and deep external pudendal branches of the femoral, the superficial perineal branch of the 

 internal pudendal, and the cremasteric branch from the inferior epigastric. The veins follow 

 the course of the corresponding arteries. The lymphatics end in the inguinal lymph glands. 

 The nerves are the ilioinguinal and lumboinguinal branches of the lumbar plexus, the two 

 superficial perineal branches of the internal pudendal nerve, and the pudendal branch of the 

 posterior femoral cutaneous nerve. 



The Inguinal Canal (canalis inguinalis) is described on page 418. 



The Spermatic Cord (funiculus spermaticus) (Fig. 1146) extends from the abdom- 

 inal inguinal ring", where the structures of which it is composed converge, to the back 

 part of the testis. In the abdominal wall the cord passes obliquely along the 

 inguinal canal, lying at first beneath the Obliquus internus, and upon the fascia 

 transversalis; but nearer the pubis, it rests upon the inguinal and lacunar liga- 

 ments, having the aponeurosis of the Obliquus externus in front of it, and the 

 inguinal falx behind it. It then escapes at the subcutaneous ring, and descends 

 nearly vertically into the scrotum. The left cord is rather longer than the right, 

 consequently the left testis hangs somewhat lower than its fellow. 



Structure of the Spermatic Cord. The spermatic cord is composed of arteries, veins, lymphatics, 

 nerves, and the excretory duct of the testis. These structures are connected together by areolar 

 tissue, and invested by the layers brought down by the testis in its descent. 



The arteries of the cord are ; the internal and external spermatics ; and the artery to the ductua 

 deferens. 



The internal spermatic artery, a branch of the abdominal aorta, escapes from the abdomen 

 at the abdominal inguinal ring, and accompanies the other constituents of the spermatic cord 

 along the inguinal canal and through^the subcutaneous inguinal ring into the scrotum. It then 

 descends, to the testis, and, becoming tortuous; divides into several branches, two or three of 

 which accompany the ductus deferens and supply the epididymis, anastomosing with the artery 

 of the ductus deferens: the others supply the substance of the testis. 



