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** Intermediate body
 
** Intermediate body
 
** Caudal neck
 
** Caudal neck
* Its wall comprises a muscle layer covered in an epithelial layer.
+
* Its wall comprises a muscle layer covered in a transitional epithelial layer.
 
* Its size and posistion are determined by how full it is.
 
* Its size and posistion are determined by how full it is.
 
** When empty the bladder wall is wrinkled and thicker
 
** When empty the bladder wall is wrinkled and thicker
 +
*** It rests on the pubic bones
 +
*** It is entirely in the pelvis of the large species but partly enters the abdomen of the carnivores
 +
*** It is largely retroperiotneal in the larger species
 
** When full and distended the folds dissapear and the wall appears thinner
 
** When full and distended the folds dissapear and the wall appears thinner
 +
*** It then becomes intraperitioneal in the larger species
 
* The paired uteric folds are visible even when the bladder is full.
 
* The paired uteric folds are visible even when the bladder is full.
 
** They extend from the ureteral opening to the neck of the bladder
 
** They extend from the ureteral opening to the neck of the bladder
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