468 Eben Clayton Hill. 



inatic artery ends in the one or more terminal branches to the 

 testis, Arnold's original description is excellent. These terminal 

 branches (A and B, Fig. 1) become tortnous just before reach- 

 ing the mediastinum of the testis and near the globus major of 

 the epididymis send one rather large vessel to supply the tunica 

 albuginea. This branch, one of the capsular branches, encircles the 

 gland on the inner side of the albuginea and sends deep branches 

 into the glandular substance which anastomose with the ascending 

 arteries given off at the mediastinum. The terminal arteries, after 

 giving off the capsular branch, break up near the mediastinum and 

 send a great number of small arteries into the gland. A small branch 

 from the terminal arteries descends to the globus minor and pass- 

 ing under the tunica albuginea (C A, Fig. 1) runs under this 

 capsule and anastomoses with the capsular branches given off at the 

 level of the globus major. These capsular branches send out many 

 small arteries, most of which are rather tortuous and encircle the 

 gland on the inner side of the albuginea. These vessels and their 

 branches supply a capillary plexus on the inner side of the tunica 

 albuginea which has been called the tunica vasculose by Astley 

 Cooper. Branches from these penetrate the glandular substance 

 and anastomose with the arteries given off at the mediastinum from 

 the spermatic artery. 



Also the capsular artery sends small branches to the tunica par- 

 ietalis visceralis. In most of the specimens examined a large 

 branch (F, Fig 1) passes from the capsular artery to the medias- 

 tinum and anastomoses with the arteries in this portion of the 



Generally at the level of the globus minor of the epididymis 



Fig. 1. — Arterial supply of bunian adult testis. A portion of the gland has 

 lieen removed so as to show the penetration of the arteries tlirougli the medi- 

 astinum into the glandular tissue. 



A. B., main terminal branches to testicle; C, branch following spei'matic 

 cord and encircling and supplj'iug vas deferens; C. A., capsular artery — a 

 branch from B. ; C. E., caput epididymis — shown in outline ; D., branch of 

 capsular artery lying on innermost side of albuginea ; E., outline of epididy- 

 mis; F., central artery connecting vessels of mediastinum with capsular 

 branches; M., mediastinum. X 31^. 



