Term
| What are some of the functions of the cytoskeleton |
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Definition
| structural support for the plasma membrane and cell organelles, intracellular movement/transport of substances, cell locomotion, mm contraction |
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Term
| What are the three main elements of the cytoskeleton |
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Definition
| microfilaments, intermediate filaments, and microtubules |
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Term
| If you have a cut and you need wound contraction to occur during the healing which element of the cytoskeleton would be the most helpful |
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Definition
| microfilaments. These also are important to maintaining cell shape, and facilitating shape changes during movement. |
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Term
| This is beneath the plasma membrane, and forms the support meshwork that prevents the cell from deformation. |
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Definition
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Term
| Explain what myosin do in muscle contraction. |
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Definition
| They form cross-bridges with actin to produce the contractile movement of our muscles. This also requires Ca and ATP. |
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Term
| What are the five different classes of intermediate filaments and where are they found. |
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Definition
| cytokeratin-epithelial, vimentin-mesodermal cells (endothelial, smooth muscle, neuroectodermal) desmin-muscle, neurofilament proteins-neurons, GFAP- glial fibrillary acidic protein |
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Term
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Definition
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Term
| What are microtubules made up of |
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Definition
| 2 types of globular protein subunits (alpha and beta tubulin) arranged in a coiled spiral pattern. |
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Term
| What are the two proteins that attach to microtubules to allow for movement in the cytoplasm |
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Definition
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Term
| What do microtubules do during cell division |
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Definition
| they produce the cell spindle during cell division which functions to pull the chromosomes apart. |
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Term
| What's an arrangement of microtubules that is 9 + 2 |
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Definition
| axoneme. These grow from the basal body and are derived from modified centriole. |
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