The Perineum. 289 



obliterated portion of the vaginal process of peritoneum 

 that had been carried down in connection with the descent 

 of the testicle. 



The Testicle is suspended in the scrotum, has a 

 fibrous sheath surrounding it the tunica albuginea and 

 is covered, in front, and on the sides, by the tunica vaginalis. 

 The tubuli seminiferi converge to form the rete testis, 

 which end in the head of the epididymis to be continued 

 into the body and the globus minor and thence into the 

 vas deferens. The testicle is supplied by the spermatic 

 plexus of nerves and by branches from the hypogastric 

 plexus, which pass down to the testicle along the artery of 

 the vas deferens. The spermatic cord which supports the 

 testicle is composed from before backwards of: (1) The 

 cremaster muscle; (2) the cremasteric vessels (deep epi- 

 gastric) ; (3) behind these are the spermatic artery (aorta) 

 and/veins (pampiniform plexus), lymphatics and connect- 

 ive tissue; (4) the vas deferens with its artery (superior 

 vesical). 



Landmarks for the Perineum in the male. The bony 

 prominences felt in the perineum are, anteriorly, the pubic 

 arch ; posteriorly, the tip of the coccyx ; laterally, the rami 

 of the pubes and ischium and the tuberosities of the isch- 

 ium. Central tendon. The transversus perinei, the accel- 

 erator urinae, the sphincter ani, a few fibres of the levator 

 ani and the middle of the posterior border of the triangu- 

 lar ligament meet at a point in the central raphe, midway 

 between the centre of the anus and the junction of the scro- 

 tum with the perineum, i.e., about one and a half inches in 

 front of the centre of the anus. 



The artery of the bulb runs just in front (about one- 

 half of an inch) of a line drawn from the anterior part 

 of the ischial tuberosities to the central point of the peri- 

 neum. The white line of the anus marks the junction of 



