Bladder (disambiguation)
# Bladder (disambiguation)

The bladder (or urinary bladder) is an organ that collects urine for excretion in animals.

Bladder may also refer to:

## Biology

* Artificial urinary bladder, in humans
* Gallbladder, which stores bile for digestion
* Pig bladder, urinary bladder of a domestic pig, with many human uses
* Swim bladder, in bony fishes, an internal organ that helps to control buoyancy (homologous to lungs)
* Urinary bladder (Chinese medicine)

## Technology

* Air bladder effect, a special effect used in filmmaking
* Fuel bladder, which stores fuels or other industrial liquids
* Hydration system, sometimes known as a bladder
* Pneumatic bladder, an old technology with many industrial applications
* Waterskin, a traditional container for transporting water

## Geography

* Bladder Lake, a lake in Minnesota
