Terminology Service for NFDI4Health
swim bladder
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http://purl.obolibrary.org/obo/UBERON_0006860
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). [ http://www.briancoad.com/Dictionary/S.htm ]
Term info
Label
swim bladder
Synonyms
- gas bladder
- swimbladder
Subsets
efo_slim, organ_slim
external definition
Cavitated compound organ that is double-chambered, located in the coelom and used to maintain buoyancy and may function as an acoustic resonator.[TAO]
function notes
May function as one or more of: hydrostatic organ, sound producing organ, sound receptor, respiratory organ
has alternative id
UBERON:0008980
has obo namespace
uberon
has related synonym
air bladder, fish maw
homology notes
Lungs had already developed as paired ventral pockets from the intestine in the ancestor of Osteognathostomata. (...) In actinopterygian fishes, apart from Cladistia, the ventral intestinal pocket migrates dorsally and becomes the swim-bladder, a mainly hydrostatical organ (reference 1); Comparative transcriptome analyses indicate molecular homology of zebrafish swimbladder and Mammalian lung (reference 2).[well established][VHOG]
id
UBERON:0006860
taxon notes
Found in Actinopterygii. Often lacking in bottom fishes