20 DISSECTION OF THE CAT 



tral mass, the corpus spongiosum, and two latero- 

 dorsal masses, the corpora caver nosa. It has at 

 its extremity the external orifice of the urino-geni- 

 tal canal. The distal end of the penis is formed 

 by an expansion of the corpus spongiosum, the 

 glans, which is covered by a fold of the integu- 

 ment, the prepuce. The corpora cavernosa diverge 

 anteriorly, forming the crura penis, and are at- 

 tached to the ischia. In the distal portion of the 

 penis, just over the urino-genital canal, is a small 

 bone, the os penis. 



FEMALE. 



1. The Ovaries are a pair of small, pinkish bodies 

 suspended by a fold of peritoneum from the dor- 

 sal wall of the abdominal cavity, just posterior to 

 the kidneys. 



2. The Fallopian Tubes are the two small ducts 

 whose fimbriated ends partially grasp the ovaries. 



3. The Uterus is formed by the immediate ex- 

 pansion of the Fallopian tubes. It consists of 

 two horns which meet in the mid-line to form the 

 body of the uterus. 



4. The Vagina is the posterior continuation of the 

 body of the uterus and opens into the vestibule. 



5. The Vestibule or Urino-genital Canal is the canal 

 formed by the union of the urethra and vagina. 



6. The Clitoris is a small papilla lying inside the 

 vestibule on the ventral wall. It is homologous 

 with the penis of the male. 



