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Dictionary » I » Invagination

Invagination

Invagination

1. (Science: biology) The condition of an invaginated organ or part.

2. (Science: biology) One of the methods by which the various germinal layers of the ovum are differentiated.

in embolic invagination, one half of the blastosphere is pushed in towards the other half, producing an embryonic form known as a gastrula. In epibolic invagination, a phenomenon in the development of some invertebrate ova, the epiblast appears to grow over or around the hypoblast.

Origin: L. Pref. In- _ vagina sheath.


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Re: mechanisms of membrane transport

... molecules to a region of low free water molecules. endocytosis/exocytosis -movement of large molecule into and out of the cell respectively via invagination (or folding) of the cell membrane. The memebrane forms vesicles around the large molecule. active transport- can be in either protein channels ...

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by sapphirearth
Fri Mar 13, 2009 5:28 am
 
Forum: Molecular Biology
Topic: mechanisms of membrane transport
Replies: 2
Views: 881

Morgellon's or ..........flies, or .......

... Twenty-three of them had keratotic plugs. Histologic examination demonstrated granulomatous foci consisting of epithelioid cells and a epidermal invagination which was disrupted at the base and lateral sites. This invagination was considered to represent transepithelial elimination. ANOTHER: ...

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by RANDY
Fri Feb 17, 2006 7:34 am
 
Forum: Human Biology
Topic: Morgellon's or ..........flies, or .......
Replies: 172
Views: 37973


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