Xenopus Anatomy Ontology

Last uploaded: April 10, 2019
Preferred Name

hypochord

Synonyms

ipochord

subnotochordal rod

Definitions

Transient structure that lies immediately ventral to the notochord in the embryo, likely required for the formation of the dorsal aorta. A slight depression marks the future hypochord at NF stage 20 and its segregation from the dorsal endoderm begins at NF stage 24. It progresses from anterior to posterior and is complete by NF stage 28. At NF stage 32 it is present as a dorso-laterally flattened ribbon of yolk-laden cells. It degenerates by apoptosis and by NF stage 43 is no longer detectable as a distinct structure in the trunk region of the tadpole. The most posterior hypochord persists and begins to ossify, fusing with the coccyx to form the urostyle in the pelvic girdle around NF stage 63.

ID

http://purl.obolibrary.org/obo/XAO_0000056

database_cross_reference

UBERON:0003058

definition

Transient structure that lies immediately ventral to the notochord in the embryo, likely required for the formation of the dorsal aorta. A slight depression marks the future hypochord at NF stage 20 and its segregation from the dorsal endoderm begins at NF stage 24. It progresses from anterior to posterior and is complete by NF stage 28. At NF stage 32 it is present as a dorso-laterally flattened ribbon of yolk-laden cells. It degenerates by apoptosis and by NF stage 43 is no longer detectable as a distinct structure in the trunk region of the tadpole. The most posterior hypochord persists and begins to ossify, fusing with the coccyx to form the urostyle in the pelvic girdle around NF stage 63.

develops_from

http://purl.obolibrary.org/obo/XAO_0000090

ends during

http://purl.obolibrary.org/obo/XAO_1000075

has_exact_synonym

ipochord

has_obo_namespace

xenopus_anatomy

has_related_synonym

subnotochordal rod

id

XAO:0000056

label

hypochord

notation

XAO:0000056

part_of

http://purl.obolibrary.org/obo/XAO_0000090

prefLabel

hypochord

starts during

http://purl.obolibrary.org/obo/XAO_1000040

treeView

http://purl.obolibrary.org/obo/XAO_0000090

http://purl.obolibrary.org/obo/XAO_0003040

subClassOf

http://purl.obolibrary.org/obo/XAO_0003040

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