1380 



THE URINOGENITAL ORGANS 



form, compressed laterally, and having an oblique position in the scrotum, the 

 upper extremity (extremitas superior) being directed forward and a little outward, 

 the lower extremity (extremitas inferior), backward and a little inward; the an- 

 terior convex border (margo anterior) looks forward and downward; the posterior 

 or straight border (margo posterior), to which the cord is attached, backward and 

 upward. 



The anterior border and lateral surfaces (fades lateralis et fades medialis), as well 

 as both extremities of the organ, are convex, free, smooth, and invested by the 

 visceral layer of the tunica vaginalis. The posterior border, to which the cord is 

 attached, receives only a partial investment from that membrane. To the infe- 

 rior part of the posterior border is attached the gubernaculum testis (see p. 1426), 

 which anchors the testis firmly to the scrotum. Lying upon the outer edge 

 of this posterior border is a long, narrow, flattened body, named, from its relation 

 to the testis, the epididymis (Figs. 1130 and 1131), which curves outward and 

 backward. 



Spermatic cord. 



Artery of 

 cord. 



Tunica vagmalis, 

 parietal layer. 



Non-pedunculated 

 hydatid. 

 Digital 

 fossa. 



MEDIASTINUM 

 TESTIS 



ALBUGINCA 



FIG. 1130. The testis in situ, the tunica vaginalis 

 having been laid open. 



FIG. 1131. Frontal section of the testis and epi- 

 didymis. (Poirier and Charpy.) 



The epididymis consists of a central portion or body (corpus epididymidis)] an 

 upper enlarged extremity, the head or globus major (caput epididymidis); and a 

 lower pointed extremity, the tail or globus minor (cauda epididymidis). The 

 globus major is directed inward and is intimately connected with the upper end 

 of the testicle by means of its efferent ducts, and the globus minor is connected 

 with its lower end by cellular tissue and a reflection of the tunica vaginalis. The 

 globus minor bends suddenly and passes into the seminal duct, the direction of 

 which is upward and backward. The outer surface and upper and lower ends of 

 the epididymis are free and covered by serous membrane; the body is also com- 

 pletely invested by it, excepting along its inner border, and between the body and 

 the posterior part of the outer surface of the testis is a pouch or cul-de-sac, named 

 the digital fossa (sinus epididymidis). Above this fossa is a fold of the tunica 

 vaginalis, which is called the ligamentum epididymidis superior, and below it is 

 another fold, the ligamentum epididymidis inferior. The epididymis is con- 

 nected to the back of the testis by a fold of the serous membrane. Attached to 

 the upper end of the testis, close to the globus major, is a small body; it is oblong 

 in shape and has a broad base, and is called the sessile hydatid (appendix testis 

 [Morgagnii]) (Figs. 1123 and 1130). Attached to the globus major of the epi- 



