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The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories ( For more information about these ontologies, see the MGI Publications Page at

Term:abnormal anal canal morphology
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Accession:MP:0009053 term browser browse the term
Definition:any structural anomaly in the terminal portion of the alimentary canal, which begins at the anorectal junction, where the rectal ampulla abruptly narrows as the alimentary canal pierces the pelvic diaphragm (levator ani), and ends at the anal verge, when the anoderm that lines the lower anal canal changes to hairy perianal skin; surrounded by the internal and external anal sphincters
Synonyms:exact_synonym: abnormal canalis analis

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  mammalian phenotype 5375
    digestive/alimentary phenotype 75
      abnormal digestive system morphology 55
        abnormal anal canal morphology 0
          abnormal anus morphology + 0
          abnormal internal anal sphincter morphology 0
          absent anal canal 0
          anal atresia 0
          anal fistula 0
          anal stenosis 0
          anoperineal fistula 0
          anovaginal fistula 0
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