1 86 NORMAL HISTOLOGY. 



glomeruli, and here small venous trunks centre in 

 the commencement of an interlobular vein, forming 

 the well-known stellulce Verheyenii. 



The medulla receives its blood in part from the 

 vasa efferentes of the glomeruli, which lie near the 

 boundary, between cortex and medulla ; in greater 

 quantity from the large arterial arches. Vessels 

 from the latter sources descend in spreading tufts, 

 called vasa recta, between the tubules, and break up 

 into a long-meshed capillary net, the blood from 

 which is collected in part into a round-meshed venous 

 net-work in the papillae, and returned in straight 

 veins along the tubules to the venous arches, and in 

 part passes directly back to the arches without going 

 down to the papillae. The capsule of the kidney 

 receives its blood in part from the terminal twiglets 

 of the interlobular arteries, in part from terminal 

 branches of the phrenic, lumbar, and supra-renal 

 arteries, and it passes into the stellate veins. 



The connective tissue of the kidney, aside from 

 that which forms the capsule, lines the pelvis, and 

 is distributed along the walls of the larger blood- 

 vessels and around the glomeruli, is very small in 

 amount. It may, however, be demonstrated here 

 and there, and is most abundant in the vicinity of 

 the papilla. 



TECHNIQUE. 



Rabbits Kidney. General View. A rabbit's kidney, 

 the blood-vessels of which have been injected, is cut 



