| Phenotype: | intersegmental vein increased amount, abnormal |
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| 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 |
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| 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: | increased amount |
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| Synonyms: | accessory, increased, increased number, present in greater numbers in organism, supernumerary |
| Definition: | An amount which is relatively high. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000470] |