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Summary Anatomy Item Literature (56) Expression Attributions Wiki

Anatomy Term: hypochord
XAO ID: 0000056
Synonyms: ipochord, subnotochordal rod
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."
Stage Range: NF stage 24 to NF stage 63
Marker Genes: dse col8a1 bmper ccn2 vegfa
Antibody: Vegfa Ab1
Develops From:
Anatomy Item Stage Range
endoderm NF stage 10 to NF stage 66
Develops Into:
Anatomy Item Stage Range
urostyle NF stage 48 to death
Parent(s): endoderm


Parent(s): tissue (is_a) endoderm (part_of)


References: Ontology Lookup Service , XB ANATOMY ONTOLOGY