Term Name:	swim bladder
Synonyms:	air bladder, fish maw, gas bladder, swimbladder
Definition:	A thin membranous, sometimes alveolated sac in the dorsal portion of the abdominal cavity. Contains a varying mixture of gases, not identical to the composition of air. May be one, two or three chambered. May be connected to the gut by a tube, the ductus pneumaticus (then called physostomous) or unconnected (then called physoclistous).
Ontology:	Uberon Ontology [UBERON:0006860]