Describe the structure of the male reproductive system of a frog.

The male reproductive system of a frog consists of a pair of yellowish,ovoid testes. These are found adhered to the upper part of the kidneys by a double fold of peritoneum called the mesorchium.
There are $10-12$ vasa efferentia that arise from the testes. They enter the kidneys on their side and open into Bidder's canal.
Finally,the ureter,which is now known as the urinogenital duct,emerges from the kidney and opens into the cloaca.
The cloaca is a small,median chamber that is used to pass faecal matter,urine,and sperms to the exterior.