History of Bladder

	Revision 2 . . December 12, 2001 9:41 am by Bryan Derksen [an oddly incomplete page, now with something useful in it (though still pretty stubbish)]
	Revision 1 . . December 12, 2001 9:32 am by Tlsnyder

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Diseases of the Urinary Bladder

A bladder is a pouch or other flexible enclosure with waterproof or gasproof walls. In the context of animals "bladder" usually refers to the urinary bladder, but the term is generic; zeppelins are kept buoyant by gas bladders, for example, as are many species of kelp?.