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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.
Term:Clonus
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Accession:HP:0002169 term browser browse the term
Definition:A series of rhythmic and involuntary muscle contractions (at a frequency of about 5 to 7 Hz) that occur in response to an abruptly applied and sustained stretch.
Comment:Clonus is a manifestation of spasticity that can occur with lesions of the corticospinal tract. Only sustained clonus (5 beats or more) is considered abnormal.
Synonyms:exact_synonym: Involuntary rhythmic muscular contractions and relaxations
 xref: SNOMEDCT_US:36649002;   UMLS:C0009024


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Term paths to the root
Path 1
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system physiology 0
          Abnormal central motor function 0
            Clonus 0
              Ankle clonus 0
              Elbow clonus 0
              Knee clonus 0
Path 2
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system physiology 0
          Abnormality of movement 0
            Abnormal reflex 0
              Hyperreflexia 0
                Clonus 0
                  Ankle clonus 0
                  Elbow clonus 0
                  Knee clonus 0
paths to the root