Uber Anatomy Ontology

Last uploaded: March 22, 2024
Preferred Name

hypochord

Synonyms

subnotochordal rod

ipochord

Definitions

Unlike in frogs and axolotl, the hypochord does not appear to be endodermally derived[ZFA]. near metamorphosis the hypochord fuses to the coccyx, thereby forming the urostyle[AAO] The hypochord is a transient rod-like structure in the embryos of fish, lampreys and amphibians that is located immediately ventral to the notochord. The hypochord may play a role in positioning the dorsal aorta[GO].

ID

http://purl.obolibrary.org/obo/UBERON_0003058

comment

Unlike in frogs and axolotl, the hypochord does not appear to be endodermally derived[ZFA]. near metamorphosis the hypochord fuses to the coccyx, thereby forming the urostyle[AAO]

database_cross_reference

XAO:0000056

EFO:0003475

TAO:0000031

VHOG:0000081

AAO:0000733

ZFA:0000031

definition

The hypochord is a transient rod-like structure in the embryos of fish, lampreys and amphibians that is located immediately ventral to the notochord. The hypochord may play a role in positioning the dorsal aorta[GO].

develops_from

http://purl.obolibrary.org/obo/UBERON_0006599

external_definition

A transient rod-like structure which is endodermally derived and located immediately ventral to the notochord. The hypochord is thought to play a role in positioning the dorsal aorta. Eriksson and Lofberg, 2000.[TAO]

Unsegmented ventral structure in the caudal region of anuran larvae; near metamorphosis the hypochord fuses to the coccyx, thereby forming the urostyle.[AAO]

has_exact_synonym

subnotochordal rod

ipochord

has_obo_namespace

uberon

homology_notes

In other words, we identified variations in gene expression patterns that may contribute to a molecular basis of evolutionary variation of axial structures between Teleostei and Mammalia in the determination of body axis. As already mentioned, one such difference is illustrated by the hypochord present in lower vertebrates but absent in higher animals. Perhaps, Tbx-b and Tbx-c are involved in the mechanisms underlying the formation of this organ that were lost during later evolution leading to the disappearance of the hypochord itself, similarly to other organs, such as the lateral line.[uncertain][VHOG]

id

UBERON:0003058

immediate transformation of

http://purl.obolibrary.org/obo/UBERON_0006599

in_subset

http://purl.obolibrary.org/obo/uberon/core#efo_slim

http://purl.obolibrary.org/obo/uberon/core#dubious_grouping

label

hypochord

notation

UBERON:0003058

only in taxon

http://purl.obolibrary.org/obo/NCBITaxon_7711

prefLabel

hypochord

treeView

http://purl.obolibrary.org/obo/UBERON_0006599

subClassOf

http://purl.obolibrary.org/obo/UBERON_0000479

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