loading...| Preferred Name | yolk sac | |
| Synonyms |
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| Definitions |
A sac-like expansion of the ventral wall of the intestine, narrowed into a yolk stalk near the body[Hyman's]. Membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals. It functions as the developmental circulatory system of the human embryo, before internal circulation begins. In the mouse, the yolk sac is the first site of blood formation, generating primitive macrophages and erythrocytes[WP]. |
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| ID |
http://purl.obolibrary.org/obo/UBERON_0001040 |
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| database_cross_reference |
EHDAA2:0002212 MESH:D015017 SCTID:362845002 CALOHA:TS-1130 VHOG:0000830 EFO:0003078 Wikipedia:Yolk_sac BTO:0001471 NCIT:C14128 EMAPA:16085 EHDAA:164 FMA:87180 GAID:1301 |
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| definition |
A sac-like expansion of the ventral wall of the intestine, narrowed into a yolk stalk near the body[Hyman's]. Membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals. It functions as the developmental circulatory system of the human embryo, before internal circulation begins. In the mouse, the yolk sac is the first site of blood formation, generating primitive macrophages and erythrocytes[WP]. |
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| has developmental contribution from | ||
| has_obo_namespace |
uberon |
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| id |
UBERON:0001040 |
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| in_subset |
http://purl.obolibrary.org/obo/uberon/core#efo_slim |
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| label |
yolk sac |
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| notation |
UBERON:0001040 |
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| prefLabel |
yolk sac |
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| subClassOf |
http://purl.obolibrary.org/obo/UBERON_0007499 http://purl.obolibrary.org/obo/UBERON_0005292 |