FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term proboscis extension reflex ID (Ontology) GO:0007637 (Gene Ontology)
Definition The extension, through direct muscle actions, of the proboscis (the trunk-like extension of the mouthparts on the adult external head) in response to a nutritional stimulus.[ FlyBase:FBrf0044924 ]
Also Known As"behavioral response to nutritional stimulus, proboscis extension" ; "proboscis extension in response to nutritional stimulus"
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Genes (FBgn)GO_BIOLOGICAL_PROCESS
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 proboscis extension reflex (all annotations which use CV term, excluding "NOT" statements)
     involved_in | proboscis extension reflex
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response to nutrient
 |__behavioral response to nutrient__
behavior                             |
 |__chemosensory behavior____________|
 |__behavioral response to nutrient__|
response to external stimulus        |
 |__reflex___________________________|
response to chemical                 |
 |__chemosensory behavior____________|
                                     proboscis extension reflex  11 rec.
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Is a chemosensory behavior
behavioral response to nutrient
reflex
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Synonyms
  • "behavioral response to nutritional stimulus, proboscis extension" EXACT
    "proboscis extension in response to nutritional stimulus" EXACT
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