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Zona pellucida

zona pellucida

(Science: cell biology, gynaecology) A translucent, elastic, noncellular layer surrounding the ovum of many mammals.


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Free-flowing cells and those that are stuck together?

... mass of cells is initially held within a membranous structure - zona pellucida - that is eventully breached shortly before implantation. It has more than a mechnical ...

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by JorgeLobo
Wed May 30, 2012 10:49 am
 
Forum: Cell Biology
Topic: Free-flowing cells and those that are stuck together?
Replies: 2
Views: 2047

Various DNA questions

1: Zona pellucida is the gelatinous extracellular matrix that surrounds the egg, that the sperm has to encounter. The zona ...

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by kolean
Sun Jul 11, 2010 4:40 pm
 
Forum: Evolution
Topic: Various DNA questions
Replies: 8
Views: 4645

Could animal sperm fertilize a human egg?

... and sperm surface proteins designed to bind receptors on the zona pellucida/initiate the acrosomal reaction are species-specific.

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by snowcapk
Sat Mar 29, 2008 8:38 pm
 
Forum: Molecular Biology
Topic: Could animal sperm fertilize a human egg?
Replies: 5
Views: 13749

Cat Ovary Maturing Follicle Microscope Picture

... I can identify the ovum itself, the cytoplasm of the ovum, and the Zona Pellucida in the picture. That makes three. I cannot seem to find two more things to identify, ...

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by TerrorByte
Thu Oct 25, 2007 10:40 pm
 
Forum: Cell Biology
Topic: Cat Ovary Maturing Follicle Microscope Picture
Replies: 1
Views: 6226

I need help with two questions

... antral follicles b) one follicle becomes the dominant follicle c) a zona pellucida forms around the ovary d) about 10 to 25 of the preantral follicles form granulosa ...

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by natakadrit
Sat Dec 10, 2005 10:21 pm
 
Forum: Human Biology
Topic: I need help with two questions
Replies: 1
Views: 1771


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