UROGENITAL SYSTEM 



FEMALE UROGENITAL SYSTEM 



Ovaries 



The ovaries are elongate sacs extending along the body 

 wall and usually filled with eggs of different stages, de- 

 pending upon the season of the year and the age of the 

 individual. The ovary extends from 70 mm. to 170 mm. 

 of the length of the body cavity. Dorsal to the ovary the 

 tnesovarium attaches it to the dorsal wall of the body. 

 Note the sac like shape of the organ. 



Dorsal to the ovary are the much convoluted oviducts or 

 Miillerian ducts. They extend the whole length of the 

 body cavity. How do the eggs get into these oviducts? 

 The anterior end is fastened to the dorsal wall of the 

 anterior end of the cavity. This part of the duct forms 

 the ostium tubse, which is a funnel shaped opening. Find 

 this opening. The oviducts open into the cloaca by two 

 papillae. Split the cloaca and find the two papillae. They 

 are quite evident. 



Mesonephros or Wolffian Body 



The mesonephros of the Urodeles is the type of kidney 

 found in the fishes and amphibia. It consists of elongated 

 organs that start as metameric structures, but later lose 

 the matemerism as development goes on. The contact 

 between the organ and the blood vessels is much closer 

 than in the pronephros. The unit of structure consists 

 of Bowman's capsule, convoluted tubules and a nephro- 



stome. 



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