Medical Term:

air bladder

 

Definition: a gas-filled sac that is present in most fish and functions as a hydrostatic organ; it is located beneath the vertebral column primarily in the anterior abdomen and is connected with the esophagus in some species (goldfish). Oxygen is transferred from a rich venous sinus into the swim bladder to increase buoyancy.

Synonym(s): swim bladder

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Examples: glitazone, GI cocktail, etc.

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