Phenotype: intersegmental vein hypoplastic, abnormal
Note: This statement combines anatomy and/or ontology terms with phenotype quality terms to create a complete phenotype (EQ) statement. For detailed information on individual terms, click the hyperlinked term name.
Name: intersegmental vein
Synonyms: ISV
Definition: Veins that connect the posterior cardinal vein and the dorsal longitudinal anastomotic vessel. They run along the vertical myotomal boundaries. They form from primary intersegmental vessels that are contacted by secondary angiogenic sprouts from the posterior cardinal vein and take on the characteristics of veins. These eventually link with other secondary sprouts from the posterior cardinal vein to form the parachordal vessel.
Ontology: Anatomy Ontology [ZFA:0001057]
Name: hypoplastic
Synonyms: hypoplasia, underdeveloped
Definition: A physical quality inhering in an organ or tissue by virtue of the bearer's exhibiting a decreased number of cells, typically associated with a decrease in size.
Ontology: Phenotypic Quality Ontology [PATO:0000645]