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Related Experiment Videos

How are different ciliary beat patterns produced?

M A Sleigh, D I Barlow

    Symposia of the Society for Experimental Biology
    |January 1, 1982
    PubMed
    Summary
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    Cilia beat patterns, including arrest and reverse beating, are classified by their internal mechanism. Increased intraciliary calcium concentration triggers a sequence of ciliary movements, influencing dynein arm activation.

    Area of Science:

    • Cell Biology
    • Biophysics
    • Biochemistry

    Background:

    • Cilia exhibit diverse beating patterns, crucial for locomotion and fluid transport.
    • Ctenophore comb plates display four distinct movements: arrest, reverse, flagellar, and forward beating.
    • Understanding ciliary beat generation is key to deciphering cellular and organismal functions.

    Purpose of the Study:

    • To classify diverse planar ciliary beating patterns.
    • To elucidate the internal mechanism governing ciliary beat generation.
    • To propose a sequence of ciliary responses to stimulation based on calcium levels.

    Main Methods:

    • Observational analysis of ciliary movement patterns.
    • Correlation of beat patterns with intraciliary calcium concentration.

    Related Experiment Videos

  • Hypothesizing the role of dynein arm activation in beat modulation.

    • Main Results:

    • A simple classification for planar ciliary beating patterns is proposed.
    • A specific sequence of ciliary beat patterns (normal, flagellar, reverse, arrest) is observed following stimulation.
    • Evidence suggests increased intraciliary Ca2+ concentration is linked to changes from normal beating to arrest or reversal.

    Conclusions:

    • The sequence of ciliary beats represents the axoneme's response to increasing intraciliary Ca2+ concentration.
    • Different beat patterns arise from varied activation of dynein arms within the axoneme.
    • This provides a framework for understanding ciliary coordination and calcium signaling.