470 



AX ATOMY IX A NUTSHELL. 



The tubes of Ferrein make the pyramids of Ferrein. They are in help to 

 the cortical substance and are convoluted. The pyramids ofFerrein are formed 

 by bundles of straight and convoluted renal tubules which constitute the medul- 

 lary rays, so named on account of their radiation from the medulla. 



The tubes of Bellini are the excretory tubes opening on the papilla. They 

 are straight tubes. 



The tubes of Henle connect those of Bellini and Ferrein. They are looped 

 tubes. 



The capsule of Muller is the dilated extremity of a tube of Ferrein invest- 

 ing the Malpighian tuft probably by two layers, similar to the pleural invest- 

 ment of the lung's. 



PLATE CCLIV. 



MASSETER 



Internal Surface of the Malar Bone. 



The nerve SUPPLY to the kidney is from the renal plexus which is formed 

 by filaments from the solar plexus and the lesser splanchnic nerve. 



The blood supply is from the renal artery and renal vein, (a) Afferent 

 (vessels carrying to), (1>) efferent vessels (carrying from). The kidney is very 

 vascular. The larger arterial branches run up between the pyramids of Mal- 

 pighi to subdivide a1 their bases into cortico-medullary arches which lie be- 

 tween the cortex and medulla, giving off arterioles in both directions, the cor- 

 tical branches supplying afferent twigs to the glomeruli within the capsules of 

 Bowman. 



The medullary branches running inwards to form plexuses around the 

 straight and looped tubules of the Malpighian pyramids. The efferent vessels 

 of the Malpighian glomeruli form a capillary plexus around the uriniferous 

 tubule- and terminate in renal veins. 



The surface of the kidney receives small arteries which pass through the 

 fatty capsule from the suprarenal, spermatic, and lumbar vessels .The super- 

 ficial veins appear in the form of little stellate groups (stars of Yerhayen) which 



