saco vitelínico
1. An extraembryonic membrane in vertebrate embryos that contains nutritive yolk and provides nourishment to the developing embryo during early development
The yolk sac is visible on the ultrasound during early pregnancy.
O saco vitelínico é visível no ultrassom durante a gravidez inicial.
2. In oviparous animals, a membrane-enclosed structure containing stored nutrients that sustains the developing embryo
Fish embryos absorb nutrients from the yolk sac during their first days of development.
Os embriões de peixes absorvem nutrientes do saco vitelínico durante seus primeiros dias de desenvolvimento.
3. A membranous structure that appears early in human pregnancy and helps establish pregnancy viability
Detection of a yolk sac on ultrasound is an important marker of intrauterine pregnancy.
A detecção do saco vitelínico no ultrassom é um marcador importante de gravidez intrauterina.
The term 'yolk sac' is primarily used in medical and scientific contexts in both English-speaking countries and Brazil. In obstetric care, the detection of a yolk sac is a crucial milestone in confirming a viable intrauterine pregnancy. The Portuguese term 'saco vitelínico' is standard in Brazilian and Portuguese medical education, prenatal care, and embryology textbooks.
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