THE I \' Ki I l"\ "I i l.i 





of the capsule varies with the activity <>i' the kidm is shown in 



the following figures given by Brodie and Mackenzie 



Mean diameter of capsule 



• • glomerulus 







< i 



Bpace of capsule 

 Lumen of proximal convoluted tubule 

 •• distal " 



The urinary tubule has a remarkable l>l<><></ supply. The renal arteries 

 arise directly from the abdominal aorta and are short. They run 



through the medulla to the cortex, and join with neighboring arterie 



•« 



./. B, 



during maxima] - i 



form arches from which proceed branches, thai radiate into the corl 

 and give off smaller branches each of which very shortly breaks up in - 

 small capillary tuft, the glomerulus, which lies in the invaginated spl 

 of Bowman's capsule. The capillaries collect into an efferent vessel, which 

 appears to be smaller than the afferent artery, and tlii- sg ging 



from the capsule again breaks up to form ;i capillary network about tl 

 voluted tubules, forming their sole blood supply. These capillaries 

 coalesce to form the renal \ «-in. The blood of the kidney must 

 ingly, pass through two sets of capillars 



Tin* kidney is richly supplied with nerves, which are for t ; 

 derived from the celiac ganglion and are in connection with the Bplanch- 



