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Related Experiment Videos

The contractile mechanism in cilia.

R Rikmenspoel, W G Rudd

    Biophysical Journal
    |September 1, 1973
    PubMed
    Summary

    The study reveals how internal forces generate cilium motion in Sabellaria. A sliding filament model explains how peripheral fibers create stiffness and movement throughout the ciliary cycle.

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    Ciliary contractile model applied to sperm flagellar motion.

    Journal of theoretical biology·1982

    Area of Science:

    • Biophysics
    • Cell Biology

    Background:

    • Cilia are crucial for cellular locomotion and fluid transport.
    • Understanding the mechanics of ciliary motion is essential for cell biology research.

    Purpose of the Study:

    • To analyze the motion and forces within the Sabellaria cilium.
    • To develop a model explaining the complete ciliary cycle.

    Main Methods:

    • Detailed analysis of ciliary motion and forces.
    • Development of a sliding filament model.

    Main Results:

    • Cilium stiffness is linked to internal contractile element moments.
    • Peripheral fiber activation differs between effective and recovery strokes.
    • Peripheral fibers contribute to stiffness when cross-linked.

    Conclusions:

    • The sliding filament model successfully describes various ciliary motions.
    • The model elucidates the role of peripheral fibers in ciliary mechanics.