DISEASES OF THE URINARY ORGANS. 



DESCRIPTION OF PLATES. 



I'LATK IX: 



Fig. 1. Kidney of the ox. Taken from Handbuch des Vergleichendcn Anatomic des 

 Hans Saugetkiere, Vol. 7, 1890: A, renal artery carrying blood into the kid- 

 ney ; V, renal vein carrying blood from the kidney back to the heart ; H, 

 ureter, the tube carrying the urine from kidney to bladder. It is formed by 

 the union of a number of branches which begin as cups (calices), each 

 inclosing the tip of a conical mass of tissue from which the urine exudes. 

 1, Showing such papilla through the cups or calyx surrounding it; 2, papil- 

 }te with the cups inclosing them out in half to show their relation to each 

 other. 



Fig. 2. The male genital organs of the ox. Taken from Leisering, Mueller & 

 Ellenborger, Handbuch des Vcrg. Anat. des Hans Stittgelhiere: 1, scrotum, or 

 the pouch containing the testicles; 2, tunica vagiualis, the serous membrane 

 enveloping the testicles; 3', right testicle, outer view; 3', left testicle, inner 

 view; 4, epididymis, or the beginning of the excretory canal of the testicle; 

 4', globus major, 01 the head of the epididymis; 4", globus minor, or the tail 

 of the epididymis; 5, vas deferens, the duct through which the seminal 

 fluid reaches the ejaculatory ducts; 5', pelvic dilatation of the vas deferens; 

 6, vesicula sominalis. The vesiculic seminalcs are two oval pouches, which, 

 in addition to their own secretions, receive the semen conveyed by the sem- 

 inal ducts and hold it in reserve until copulation; 7, membranous or intra- 

 pelvic portion of the urethral caual covered by Wilson's muscle; 8, part of 

 the prostate gland covered by Wilson's muscle; 9, Cowper's gland. This 

 gland, like the prostate glaud, secretes a fluid which is thrown into the 

 urethral canal in abundance immediately before ejaculation; the expulsion 

 of the semen is by this means facilitated; 10, ejaculator seminis, or accel- 

 erator ir.iu.i- muscle; 11, penis; 11', cut portion of same; 12, cut suspensory 

 ligaments of penis; 13, sheath, or prepuce laid open; 14, retractor muscles 

 of hheath; 15, cremaster muscle cut at superior extremity ; 16, duplicatnre 

 of peritoneum; 17, ureters carrying urine from the kidneys to the bladder. 

 PLATK X : 



FIR. 1. In this figure the minute apparatus for the secretion, collection, and dis- 

 charge of the urine into the pelvis of the kidney (see preceding plate) is 

 shown. The course in ns follows: The iirino is secreted from the blood-ves- 

 sels in the. little round bodies called glomcruli (12), and by the minute cells 

 in the curved tul>c8 (11, J). 10, 8), and passes through the convoluted and 

 straight tulxvs (7, 6) into the larger tube, (1), and then out into the pelvis, 

 thence through the ureters into the bladder. The fluid and salts dissolved 

 in the urino are taken from the blood, and the minute blood vessels are there- 

 fore very abundant in the kidneys, a* is shown by the branches and network 

 on the left of the figure. The blood passes into the kidney in the artery 

 (13), then divides into branches which pass into the glomcruli (12) and also 



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