Dictionary » I » Invaginations



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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Multicellular prokaryote

... absence of endomembrane system have to mean that it can't be multicellular?? Since prokaryotes have lot of unevenings in their plasma membrane(invaginations and outgrowths)and because of their small size, they have a high surface area which completely outnumbers the need for endomemebrane system ...

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by Sumanth001
Sat Nov 30, 2013 5:08 pm
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 27
Views: 41292

caveolae and caveolin1

1.caveolae which are a special type of lipid raft, are small (50–100 nanometer) invaginations of the plasma membrane in many vertebrate cell types, especially in endothelial cells and adipocytes. have several functions in signal transduction.[1] They are also believed ...

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by taruntbiotech
Mon May 14, 2012 5:10 pm
Forum: Cell Biology
Topic: caveolae and caveolin1
Replies: 1
Views: 4342

Identification of a bacterium.

Probably because it 1. Is gigantic for a bacterial cell. 2. Has strange morphological features, like invaginations, vesicles, and tubules. 3. Reproduces strangely. It was found to be bacterial after rRNA sequencing. http://www.nature.com/nature/journal/v362/n6417/abs/362239a0.html

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by WntScientist
Tue Feb 14, 2012 5:08 am
Forum: Microbiology
Topic: Identification of a bacterium.
Replies: 1
Views: 4125

Bacterial Cell

Hi there, I got this from "MICROBIOLOGY 5/e" by Prescott, Harley and Klein "Mesosomes are structures formed by invaginations of the plasma membrane that may play a role in cell wall formation during cell division and in chromosome replication and distribution; however, mesosomes ...

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by Mjhavok
Tue Oct 04, 2005 9:21 am
Forum: Microbiology
Topic: Bacterial Cell
Replies: 7
Views: 10393

Re: Endoskeleton bug???

... most of the advanced goups it`s centralised in the torax in form of ganglion with nervs that goes from it. Althoug insect have exoscelet thay have invaginations of it wich serves as anchoring points for muscels. What if evolution turn in the direction of enlarging that invaginations? The biggest ...

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by Beetle
Fri Jun 24, 2005 12:04 am
Forum: Evolution
Topic: Q: why are insects so succesfull?
Replies: 22
Views: 18382

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