Send us a Message

Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   


The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Abnormal pyramidal tract morphology
go back to main search page
Accession:HP:0002062 term browser browse the term
Definition:Any structural abnormality of the pyramidal tract, whose chief element, the corticospinal tract, is the only direct connection between the brain and the spinal cord. In addition to the corticospinal tract, the pyramidal system includes the corticobulbar, corticomesencephalic, and corticopontine tracts.
Comment:The pyramidal tracts comprise both the corticospinal and corticobulbar tracts.
Synonyms:exact_synonym: Abnormality of the pyramidal tracts;   Morphological abnormality of the pyramidal tract
 related_synonym: Pyramidal tract disease
 alt_id: HP:0012445
 xref: UMLS:C4020859;   UMLS:C4021761

show annotations for term's descendants           Sort by:

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 morphology 0
          Morphological central nervous system abnormality 0
            Abnormal pyramidal tract morphology 0
              Abnormal corticospinal tract morphology + 0
              Aplasia/Hypoplasia of the pyramidal tract + 0
paths to the root