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Dictionary » S » Spindle

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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peripheral nervous system

... autonomic (as its nam indicates) doesn't have voluntary control over it? So in the patellar reflex, sensory neurons sensing strech in a muscle spindle of a skeletal muscle and motor neurons triggering contraction of a skeletal muscle are parts of the somatic nervous system (because the stimulus ...

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by kk
Fri Mar 20, 2009 12:38 pm
 
Forum: Physiology
Topic: peripheral nervous system
Replies: 3
Views: 1565

Some meiosis help please

... 2 b. 2 c. meiosis II Can someone please check these for me? Also, I have to draw what the cell will look like when the chromosomes attach to the spindle apparatus. Should I draw them the chromosomes in the letter-letter orientation the are shown in the picture, or should I draw them with the ...

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by ctn07
Tue Feb 24, 2009 1:25 am
 
Forum: Genetics
Topic: Some meiosis help please
Replies: 2
Views: 369

Centrifugation

Only around the spindle axis of the centrifuge. What would be the advantage of doing both?

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by blcr11
Thu Dec 25, 2008 11:13 am
 
Forum: Molecular Biology
Topic: Centrifugation
Replies: 1
Views: 421

i need some help.

alright i read my notes my teacher gave and can't find it anywhere with the internet 1.why are spindle fibers important 2.sister chromatids and centromeres make up what 3.what phase follows telophase (i think it's cytokinesis) 4.what effect on the cell would there be if ...

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by smilingMeFow
Wed Dec 17, 2008 4:19 am
 
Forum: Cell Biology
Topic: proteins found in the cell membrane.
Replies: 3
Views: 1363

Homework, read before you post

alright i read my notes my teacher gave and can't find it anywhere with the internet 1.why are spindle fibers important 2.sister chromatids and centromeres make up what 3.what phase follows telophase (i think it's cytokinesis) 4.what effect on the cell would there be if ...

See entire post
by smilingMeFow
Tue Dec 16, 2008 11:45 pm
 
Forum:
Topic: Homework, read before you post
Replies: 9
Views: 10658
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