1386 



CLINICAL AND TOPOGRAPHICAL ANATOMY 



The numerous large sebaceous glands that are found in the skin of the scrotum may sive 

 rise to cysts or adenomata. The deeper layers of the scrotum are derived from the abdom- 

 inal wall, being brought down by the processus vaginalis in the descent of the testis. 



Testis and epididymis. — The left testis, the first to descend, lies somewhat 

 lower in the scrotum, and this fact is one reason of the frequency with which a 



Fig. 1115. — The Arteries of the Perineum. 



Perinaeal vessels 



Bulbo-cavernosus 



Colles's fascia, turned back 



Ischio-cavernosus 



Transverse perineal vessels 

 Cut edge of uro-genital 

 trigone 

 Perineal nerve giving off 

 transverse branch 



Pudic vessels 



Inferior heemorrhoidal ves- 

 sels and nerves 



Gluteus mazimus, 

 hooked back 



Crus penis 



Dorsal artery of penis 

 Deep artery of penis 



Bulb 



Artery of btilb 

 Bulbo-urethral gland 

 Pudic artery 



Sacro-tuberous ligament 



Levator ani 



External sphincter ani 



Gluteus maximus 



Fig. 1116. — Sagittal Section of Male Pelvis (Xl/3). (Braune.) 



Bladder 



Symphysis pubis 



Bulb 



Recto-vesical pouch 

 Rectum 



Transverse fold 

 .Vesicula seminalis 



,;^^4'^'^<^^us ejaculatorius 

 Prostate 

 LJExternal sphincter 

 }■ Internal sphincter 



External sphincter 



varicose condition of the spermatic veins occurs on the left side. On palpation 

 the smooth firm l)ody of the testis, pressure on which causes the characteristic 

 "testicular sensation" can be felt to lie in front of and rather medially to the 

 epididymis. TIk; three parts of the lattc^r, the caput above, the body, and the 

 Cauda epididymidis below, can also be distinguished. Ruimiiifi, u])ward from the 



