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WordNet-Online
Definitions from WordNet
Noun vitelline sac has 1 sense
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Definitions from the WebVitelline SacDescription:The vitelline sac is a membranous structure found in the embryos of non-mammalian vertebrates. It serves as a storage site for nutrients and is equivalent to the yolk sac in mammalian embryos. The vitelline sac plays a crucial role in providing nourishment to the developing embryo until it is capable of obtaining nutrients from external sources. Senses:1. Noun (Anatomy): In anatomy, the vitelline sac refers specifically to the membranous structure in the embryos of non-mammalian vertebrates that stores nutrients. 2. Noun (Zoology): In zoology, the vitelline sac refers to the yolk sac in non-mammalian vertebrates, which provides nourishment to the developing embryo. Sample Sentences:1. The vitelline sac in fish embryos gradually decreases in size as they mature. 2. Amphibians rely on the nutrients stored in the vitelline sac during their early developmental stages. 3. The yolk of avian eggs corresponds to the vitelline sac in non-avian reptiles. Related Products: | ||||
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