TH Kill AND LEG. 



335 



erector penis ; (3) superficial transvcrsus perina-i ; (4) levator ani. Nerve-supply, 

 the internal pudic. 



5. You then located the origin of the three cylinders of which the penis is 

 composed, the central one on the triangular ligament as the bulb, the lateral 

 ernes on the ischo-pubic ranii as the crura, and you studied the muscles associ- 

 ated with these three cylinders : accelerator urinae and erector penis. 



URETER 



Plica uretica 

 SECTION OF BLADDER 



INTERNAL URINARY MEATUS 



PROSTATIC SINUS WITH OPENING OF 

 PROSTATIC GLANDS 



SINUS POCULARIS 



FOLLICULAR ISLANDS OF DORSAL WALL WK 





COWPER'S GLAND 



SEPTUM PECTINIFORME 



THIN LAYER OF CORPUS SPONOIOSUM 

 ORIFICE OF COWPER'S GLAND 



Albuginea of corpora oavernoaa 



FOSSA NAVICULARIS " 



EXTERNAL URINARY MEATUS 



SECTION OF PROSTATE 

 VERUMDKTANUM 

 EJACULATORY DUCT 

 PROSTATIC GLANDS 



MEMBRANOUS URETHRA 



SECTION OF CORPUS CAVERNOSUM 



BULBOUS PORTION OF URETHRA 



Mucous membrane 



In;. 232. THE MALE URETHRA, CLEFT DORSALLY TO SIIOXY VENTRAL Mucous WALL. 



6. You examined the three component cylinders of the penis ; saw the 

 and special characters of each. You saw each cylinder surrounded by a 

 dense tunica albuginea and composed internally of erectile tissue. You saw the 

 central cylinder traversed by a conduit the urethra ; you opened this urethra and 

 studied its interior. In the cuts and in your dissections you studied both the 

 transverse and longitudinal sections of the penis. 



