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Centrosome

Definition

noun, plural: centrosomes

(cell biology) The organelle located near the nucleus in the cytoplasm that divides and migrates to opposite poles of the cell during mitosis, and is involved in the formation of mitotic spindle, assembly of microtubules, and regulation of cell cycle progression; the region pertaining to the organelle.


Supplement

It was discovered in 1888 by Theodor Boyeri describing it as a special organ of cell division.

Centrosomes in animals are the main microtubule organizing center (MTOC), and contain two orthogonally arranged centrioles surrounded by an amorphous mass of pericentriolar material.


Word origin: From Latin centrum and Greek kentron, center + Greek, soma, body.

Related forms: centrosomic (adjective).

See also: centriole, nucleus, mitosis.


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Are centrioles seen only during cell division?

Can they be seen separately from the centrosome when the cell is not dividing?

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by XtrLearn
Mon Jul 22, 2013 8:23 am
 
Forum: Cell Biology
Topic: Are centrioles seen only during cell division?
Replies: 1
Views: 841

Centrosome

Thank you, that link was really good! My question was essentially the significance of a centrosome.

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by Adz795
Wed Sep 07, 2011 11:39 am
 
Forum: Cell Biology
Topic: Centrosome
Replies: 2
Views: 4359

Centrosome

-What is the significance of a centrosome? A plant cell can live without a centrosome. And in animal cells too centrosomes are not required for spindle formation during cell division. -What do they specifically do as microtubule organizing ...

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by Adz795
Mon Sep 05, 2011 2:18 pm
 
Forum: Cell Biology
Topic: Centrosome
Replies: 2
Views: 4359

Re: function of a centriole?

... the skeleton of the cell that provides both shape and structure to a cell. Animal cells contain 2 centrioles, which together form the structure, centrosome. In other words, the centrioles are found within the centrosomes, which is a small region in the cytoplasm near the nucleus. Within the centrosomes, ...

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by sara135
Tue Jul 12, 2011 11:05 am
 
Forum: Cell Biology
Topic: function of a centriole?
Replies: 22
Views: 81450

Re: Prokaryotic and Eukaryotic cells

... but none on the organelles in a prokaryotic cell. The organelles I do not know about in eukaryotic cells are... Lysosome Peroxisome Centriole Centrosome Secretary Vesicle cell membrane Vacuole Chloroplast Cytoskeleton In Prokaryotic cells... Storage Granules Endospore Capsule Outer membrane ...

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by srk17
Sat Jul 17, 2010 8:25 am
 
Forum: General Discussion
Topic: Prokaryotic and Eukaryotic cells
Replies: 11
Views: 7857
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