What is the meaning of vitelline sac?

Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional.
- synonyms: yolk sac, umbilical vesicle, vesicula umbilicus

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APA	WordNet. (2010). vitelline sac. Retrieved September 29, 2026, from http://smartdefine.org/vitelline_sac/definitions/1330749
Chicago	WordNet. 2010. "vitelline sac" http://smartdefine.org/vitelline_sac/definitions/1330749 (accessed September 29, 2026).
Harvard	WordNet 2010, vitelline sac, Smart Define, viewed 29 September, 2026, <http://smartdefine.org/vitelline_sac/definitions/1330749>.
MLA	WordNet. "vitelline sac" 23 October 2010. Web. 29 September 2026. <http://smartdefine.org/vitelline_sac/definitions/1330749>

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