Cytoskeleton

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Last updated 7:35 PM on 9/16/26
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15 Terms

1
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Why does a neuron need a cytoskeleton?
To provide structural support and maintain cell shape
2
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What three cytoskeletal structures were discussed?
Microtubules neurofilaments and microfilaments
3
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Which cytoskeletal structure is about 20 nm?
Microtubules
4
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What are microtubules made of?
Tubulin
5
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How are microtubules arranged in neurites?
Parallel to the length of axons and dendrites
6
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What are the two major functions of microtubules?
Structural support and tracks for motor proteins
7
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Which cytoskeletal structure is about 10 nm?
Neurofilaments
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What do neurofilaments help maintain?
The diameter/caliber of the neurite
9
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How are neurofilaments related to microtubules in the notes?
They are cross-linked with them
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Which cytoskeletal structure is about 5 nm?
Microfilaments
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What are microfilaments made of?
Actin
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What two forms of actin were mentioned?
Globular and filamentous actin
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What is a major function of microfilaments?
Changing and regulating cell shape
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What neuronal structures are microfilaments associated with?
Cell membranes and synaptic protrusions
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Rank the cytoskeletal structures largest to smallest?
Microtubules → neurofilaments → microfilaments