vitelline membrane


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Related to vitelline membrane: fertilization membrane, Corona radiata

vitelline membrane

n.
1. An extracellular coat that surrounds the egg in invertebrates and most nonmammalian vertebrates. Also called vitelline envelope.
2. The zona pellucida.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

vitelline membrane

(vɪˈtɛlɪn; -aɪn)
n
(Zoology) zoology a membrane that surrounds a fertilized ovum and prevents the entry of other spermatozoa
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

vitel′line mem′brane


n.
the membrane surrounding an egg yolk.
[1835–45]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The elucidation and naming of eggshell (= exochorion) and internal layers (endochorion, vitelline membrane and exuvia) is based on Snodgrass (1935), Moscona (1950), Bedford (1970), Furneaux and Mackay (1976) and Gullan and Cranston (2010).
Quality assessments, such as the Haugh unit measure of egg protein quality, vitelline membrane strength, the pH of the yolk and albumen of the eggs were not significantly different after the high-voltage atmospheric cold plasma treatment.
During extended storage, particularly at high temperature, yolk flattening because of osmotic migration from the albumen through the weaker vitelline membrane reduces the YI [13].
The sperm motility, the capability to undertake the acrosome reaction, the ability to fuse with the vitelline membrane of the egg, and the DNA integrity; all are susceptible to oxidative damage (De-Lamirande and Gagnon, 1992).
These pseudo-embryos displayed the three layers typical of embryos (ectoderm, mesoderm and endoderm), and extra-embryonic structures such as the Vitelline membrane and even signs of blood cell formation.
Salmonella incidence during storage: When eggs contaminated through vitelline membrane, Salmonella get entrance to egg yolk and increases their number due to favorable environmental conditions for its growth (Humphrey, 2004).
enteritidis is not often deposited inside the nutrient-rich yolks of naturally contaminated eggs, penetration by the bacteria through the vitelline membrane into the yolk could result in a rapid increase in bacterial levels.
Another obvious change that can be observed during egg ageing is the flattening of the yolk caused by the weakening of the vitelline membrane [3].
The vitelline membrane of the hen's egg (VMHE) is transparent fibrous bilayer which encloses the yolk.