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Summary Anatomy Item Literature (170) Expression Attributions Wiki

Anatomy Term: external gill
XAO ID: 0000120
Synonyms: gill
Definition: "The primary respiration organ in some species of tadpoles, whose function is the extraction of oxygen from water and the excretion of carbon dioxide. The microscopic structure of a gill is such that it presents a very large surface area to the external environment. Gills usually consist of thin filaments of tissue, branches, or slender tufted processes which have a highly folded surface to increase surface area. A high surface area is crucial for effective gas exchange."
Stage Range: NF stage 39 to NF stage 53
Marker Genes: irs1
Develops From:
Anatomy Item Stage Range
gill primordium NF stage 35 and 36 to NF stage 39
Develops Into:
Parent(s): gill primordium


Parent(s): surface structure (is_a) respiratory system (part_of)


References: Ontology Lookup Service , XB ANATOMY ONTOLOGY