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About: Gestational sac     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : umbel-rc:Embryology, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingwikidata:Q4936952anatomical structureembryologyyago:Abstraction100002137yago:Biology106037666yago:Cognition100023271yago:Content105809192yago:Discipline105996646yago:Embryology106071426yago:KnowledgeDomain105999266yago:LifeScience106037298yago:NaturalScience106000400yago:PsychologicalFeature100023100yago:Science105999797umbel-rc:AnimalBodyPartumbel-rc:Embryology New Facet based on Instances of this Class

The gestational sac is the large cavity of fluid surrounding the embryo. During early embryogenesis it consists of the extraembryonic coelom, also called the chorionic cavity. The gestational sac is normally contained within the uterus. It is the only available structure that can be used to determine if an intrauterine pregnancy exists until the embryo can be identified. On obstetric ultrasound, the gestational sac is a dark (anechoic) space surrounded by a white (hyperechoic) rim.