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THE HORSE IN HEALTH AND DISEASE 



voluted manner, forms two loops, and finally opens into a collecting 

 tubule which conveys the urine to the pelvis of the kidney. 



Fig. 31. — Diagrammatic scheme of uriniferous tubules and blood-vessels 

 of kidney: a, Arched collecting tubule; 6, straight collecting tubule; c, distal 

 convoluted tubule; d, renal (malpighian) corpuscle; c, proximal convoluted 

 tubule; /, loop of Henle; g, collecting tubule; h, arteria arciformis; i, large 

 collecting tubule; j, papillary duct; k, artery of capsule; I, interlobular ar- 

 tery; m, capillary network, vas afferens; n, arteriola recta spuria; o, glomer- 

 ulus; p, vena arciformis. (Bohm, Davidoff, and Huber.) 



The ureters are thick-walled ducts about the size of a goose 

 quill, which connect the kidney with the bladder. Their course, 

 of about 26 inches, is along the sublurabar muscles into the 

 pelvic cavity. They have muscle-fibers in their walls which show 



