Protozoans from the Vorticella group attach themselves to plant matter with long stalks, inside which is a fiber called a myoneme. When stimulated, the myoneme contracts at a rate of 100 lengths per second, faster than any known muscle. This contraction causes the stalk to coil and condense, allowing Vorticella to “evade” from a potential predator. After several seconds, the coil relaxes and is free to contract again.
Image by Arturo Agostino.
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Protozoans from the Vorticella group attach themselves to plant matter with long stalks, inside which is a fiber called a myoneme. When stimulated, the myoneme contracts at a rate of 100 lengths per second, faster than any known muscle. This contraction causes the stalk to coil and condense, allowing Vorticella to “evade” from a potential predator. After several seconds, the coil relaxes and is free to contract again.

Image by Arturo Agostino.

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    Learning about this in one if my courses :)
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    Protozoans from the Vorticella group attach themselves to plant matter with long stalks, inside which is a fiber called...
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