yolk sac

Noun

Meaning

English Wikipedia has an article on:yolk sacWikipedia
yolk sac (plural yolk sacs)

(anatomy) A membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals.

Synonyms

Hypernyms

Examples

After that, the epiblast and the hypoblast establish contact with the extraembryonic mesoderm until they cover the yolk sac and amnion. Source: Internet

Most other bony fish undergo metamorphosis from embryo to larva ( fry ) and then to the juvenile stage during absorption of the yolk sac, because after that phase the individual needs to be able to feed for itself. Source: Internet

In another 20% of cases, there is visualization of a gestational sac containing a yolk sac and/or an embryo. Source: Internet

Hatchling hellbenders are 25–33 mm long, have a yolk sac as a source of energy for the first few months of life, and lack functional limbs. Source: Internet

The juvenile coelacanth's broad yolk sac hangs below the pelvic fins. Source: Internet

The splanchnic depends on a continuous layer that covers the yolk sac. Source: Internet

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