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Sac, yolk: See: Yolk sac.
Library > Literature & Language > Dictionary n. A membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks ...
Brief and Straightforward Guide: What is a Yolk Sac? ... We would love to know what you think! Please let us know if you have any comments or questions about this ...
The yolk sac is the first thing that becomes visible inside the gestational sac in early pregnancy on an ultrasound. It is an early structure that helps to ...
sac (sak) a pouch or bag. air sacs alveolar s's. allantoic sac the dilated portion of the allantois, becoming a part of the placenta in many mammals; it becomes the ...
The yolk sac is the first element seen in the gestational sac during pregnancy, usually at 5 weeks gestation. It is a critical landmark, identifying a true ...