sac

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Related to chorionic sac: Chorionic villi, extraembryonic mesoderm
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Synonyms for sac

Synonyms for sac

an enclosed space

a case or sheath especially a pollen sac or moss capsule

a member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay

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References in periodicals archive ?
The yolk sac is the first structure able to be visualized within the early gestational sac (chorionic sac), usually by the time the mean gestational sac diameter (MSD) is 8-10 mm (Figure 4).
[5] proposed more stringent criteria: the placenta and entire chorionic sac containing the live pregnancy must be below the internal os, and the cervical canal must be dilated and barrel shaped.
In a patient who has had a cesarean delivery, a low chorionic sac is almost always a CSP.
The foetal part develop from chorionic sac & maternal part derived from endometrium.
The first definitive ultrasound finding of an early intrauterine pregnancy appears consistently in the fifth week of gestation: a circular chorionic sac, typically 5-8 mm wide.
The role of cytotrophoblasts is to provide the syncytium with cells in addition to forming outpouchings that later become the chorionic villi covering the chorionic sac.
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