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Spindle

Definition

noun, plural: spindles

(1) A collection of minute fibers composed of microtubules, which are prominent during cell division, as mitotic spindle or mitotic apparatus''.

(2) A specialized innervated muscle structure involved in the reflex action and in proprioception, as muscle spindle.

(3) A species of a poisonous shrub or small tree of the genus Euonymus, originally used for making spindles used for spinning wool.

(4) An EEG waveform that occurs during sleep, as sleep spindle.


Supplement

Word origin: Middle English spindel, alteration of Old English spinel.

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Cell Organelles

... in cells reproduce themselves. My AP Bio teacher explained to me that during mitosis, when the cytoskelaton disassembles to make the mitotic spindle, the organelles just float around and they can float into the daughter cell right before cytokinesis occurs, but I'm curious to know how the ...

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by RandomStudent
Mon Jan 28, 2013 3:48 am
 
Forum: Cell Biology
Topic: Cell Organelles
Replies: 3
Views: 4242

SPB - Spindle Pole Body

Hello everyone! I've been sitting my mycology lecture and I heard about such a thing like SPB - spindle pole body. My lecturer said that not much is known about its function, but maybe anyone here could tell something about it? What is its function? Thanks in advance :)

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by sophie0412
Wed Sep 05, 2012 3:15 pm
 
Forum: Cell Biology
Topic: SPB - Spindle Pole Body
Replies: 0
Views: 1285

Chromosomes And Heredity

... but in many cases there is no fusion of nuclear material at this stage. Each nucleus simultaneously undergoes a mitosis with the axes of the spindle paralle to each other, but at the telophase stage the adjacent chromatides, originally from different parents become enclosed in the same nuclear ...

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by chikis
Wed May 16, 2012 10:31 am
 
Forum: Genetics
Topic: Chromosomes And Heredity
Replies: 4
Views: 6041

Does NOT contain microtubles...

a) Hair fibres (if this is it, then does that mean this is a spindle fibre, cilia??) b) Flagella

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by TwinkleK
Sat Feb 11, 2012 9:43 pm
 
Forum: Human Biology
Topic: Does NOT contain microtubles...
Replies: 1
Views: 1607

MITOSIS PHASES QUESTION?

... DNA molecules progressively shorten and condense by coiling, to form chromosomes. The nuclear membrane and nucleolus are no longer visible. The spindle apparatus has migrate to opposite poles of the cell.. 3. Metaphase The spindle fibres attach themselves to the centromeres of the chromosomes ...

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by HerrBiologie
Sun Oct 30, 2011 9:16 am
 
Forum: Cell Biology
Topic: MITOSIS PHASES QUESTION?
Replies: 2
Views: 3422
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