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vitelline membrane
noun
- the membrane surrounding the egg yolk.
vitelline membrane
/ vɪˈtɛlɪn, -aɪn /
noun
- zoology a membrane that surrounds a fertilized ovum and prevents the entry of other spermatozoa
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Word History and Origins
Origin of vitelline membrane1
First recorded in 1835–45
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Example Sentences
Surrounding the embryo is a vitelline membrane, an inner, and an outer envelope (Fig. 1).
From Project Gutenberg
The zona is the first to disappear, and the vitelline membrane next becomes gradually thinner.
From Project Gutenberg
Both the vitelline membrane and the zona radiata are found in Raja, but in a much less developed condition than in Scyllium.
From Project Gutenberg
The stage of about the greatest development of both the vitelline membrane and zona radiata is represented on Pl.
From Project Gutenberg
The big cells have now become flask-shaped like those in Scyllium, and send a process down to the vitelline membrane.
From Project Gutenberg
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