Skip to main content
Select Source:

vitelline membrane

vitelline membrane The membrane that surrounds the ovum of animals, from which it has been secreted (e.g. in birds this is the membrane surrounding the yolk of the egg). In Drosophila the term is used rather specifically for the membrane that immediately surrounds the plasma membrane of the ovum. In this case it is formed by the fusion of deposits in the intercellular space between the oocyte and columnar follicle cells that surround it.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"vitelline membrane." A Dictionary of Zoology. . Encyclopedia.com. 24 Jul. 2017 <http://www.encyclopedia.com>.

"vitelline membrane." A Dictionary of Zoology. . Encyclopedia.com. (July 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/vitelline-membrane

"vitelline membrane." A Dictionary of Zoology. . Retrieved July 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/vitelline-membrane

zona pellucida

zona pellucida A layer of glycoprotein that surrounds the plasma membrane of a mammalian egg cell. It develops as a jelly coat around the primary oocyte and is surrounded by the granulosa cells.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"zona pellucida." A Dictionary of Biology. . Encyclopedia.com. 24 Jul. 2017 <http://www.encyclopedia.com>.

"zona pellucida." A Dictionary of Biology. . Encyclopedia.com. (July 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida-0

"zona pellucida." A Dictionary of Biology. . Retrieved July 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida-0

zona pellucida

zona pellucida (zoh-nă pel-oo-sid-a) n. the thick membrane that develops around the mammalian oocyte within the ovarian follicle. See ovum.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"zona pellucida." A Dictionary of Nursing. . Encyclopedia.com. 24 Jul. 2017 <http://www.encyclopedia.com>.

"zona pellucida." A Dictionary of Nursing. . Encyclopedia.com. (July 24, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida

"zona pellucida." A Dictionary of Nursing. . Retrieved July 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida

zona pellucida

zona pellucida The transparent covering of an oocyte.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"zona pellucida." A Dictionary of Zoology. . Encyclopedia.com. 24 Jul. 2017 <http://www.encyclopedia.com>.

"zona pellucida." A Dictionary of Zoology. . Encyclopedia.com. (July 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida

"zona pellucida." A Dictionary of Zoology. . Retrieved July 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/zona-pellucida

vitelline membrane

vitelline membrane See egg membrane.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"vitelline membrane." A Dictionary of Biology. . Encyclopedia.com. 24 Jul. 2017 <http://www.encyclopedia.com>.

"vitelline membrane." A Dictionary of Biology. . Encyclopedia.com. (July 24, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/vitelline-membrane-0

"vitelline membrane." A Dictionary of Biology. . Retrieved July 24, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/vitelline-membrane-0