501 



from the linea alba. 



MALE GENITAL ORGANS OF THE OX 



relatively very small, and is about four inches (ca. 10 cm. 

 The cremaster internus is feeble. 



The spermatic cords emerge through the outer angles of the external inguinal rings and 

 curve downward and inward to the neck of the scrotum. The external nngs are about four 

 Ses (ca. 10 cm.) long, and are two and a half to three inches (G to 8 cm. apart. In anmuils m 

 good condition there is a large mass of fat above the neck of the scrotum, between the spermatic 



Bladder 



Vesicula seminalis ^ 



Urethra {covered by urethral muscle) 



Prostate (body) 



Bulbo-urethral {Cowper^s) gland 



Fig. 400.— Internal Genital Organs of Bull; Dorsal View. 

 The right vesicula is sectioned frontally. The dotted line indicates the backward extension of the peritoneum. 



cords The mesorchium extends to the bottom of the tunica vaginalis forming a narrow fold 

 (ca. 1 cm. wide) which attaches the epididymis to the posterior part of the tunic. 



The inguinal canal presents several special features in the bull. Ihe in ernal ring is very 

 long Its anterior border, formed by the edge of the internal oblique, is decidedly concave and 

 is tendinous in its inner part. The long axis of the external ring is .lirected outward, forward and 

 downward. The spermatic cord lies in its outer part, the external pu.hc vessels in its middle. 

 A muscular band about an inch wide, detached from the internal oblique muscle, crosses the outer 

 side of the vaginal ring. 



The vas deferens is small in caliber. The urogenital fold is narrow, so that 

 the vasa are closer together in it than in the horse. On reaching the posterior 

 part of the bladder they are in apposition for a distance of about four inches 



