THIGH AND LEG. 



335 



erector penis ; (3) superficial transversus perinaii ; (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 

 ones on the ischo-pubic rami as the crura, and you studied the muscles associ- 

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



URETER -4 



Plica uretica 



SECTION OF BLADDER 



INTERNAL URINARY MEATUS 



PROSTATIC SINUS WITH OPENING OF 

 PROSTATIC GLANDS 



SINUS POCULARIS 



FOLLICULAR GLANDS OF DORSAL WALL 



SEPTUM PECTINIFORME 



THIN LAYER OF CORPUS SPONGIOSUM 

 ORIFICE OF COWPER'S GLAND 



Albuginea of corpora cavernoaa 



FOSSA NAVICULARIS 



EXTERNAL URINARY MEATUS 



SECTION OF PROSTATE 

 VERUMONTANUM 

 EJACLTLATORY DUCT 

 PROSTATIC GLANDS 



MEMBRANOUS URETHRA 



SECTION OF CORPUS CAVERNOSUM 



BULBOUS PORTION OF URETHRA 



Mucous membrane 



j/ I(; . 232. THE MALE URETHRA, CLEFT DORSALI.V TO SHOW VENTRAL Mucors WALL. 



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

 general 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. 



