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Related Concept Videos

Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...

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Related Experiment Video

Updated: May 29, 2026

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo
08:00

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo

Published on: July 13, 2015

Finding the ciliary beating pattern with optimal efficiency.

Natan Osterman1, Andrej Vilfan

  • 1J. Stefan Institute, 1000 Ljubljana, Slovenia.

Proceedings of the National Academy of Sciences of the United States of America
|September 8, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a new measure for biological cilia efficiency. Optimal patterns for dense cilia resemble Paramecium, with fast effective and slow recovery strokes for efficient pumping.

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Collection, Expansion, and Differentiation of Primary Human Nasal Epithelial Cell Models for Quantification of Cilia Beat Frequency
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Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic
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Related Experiment Videos

Last Updated: May 29, 2026

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo
08:00

Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo

Published on: July 13, 2015

Collection, Expansion, and Differentiation of Primary Human Nasal Epithelial Cell Models for Quantification of Cilia Beat Frequency
11:13

Collection, Expansion, and Differentiation of Primary Human Nasal Epithelial Cell Models for Quantification of Cilia Beat Frequency

Published on: November 10, 2021

Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic
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Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic

Published on: November 7, 2020

Area of Science:

  • Biophysics
  • Cell Biology
  • Fluid Dynamics

Background:

  • Biological cilia are microscopic hair-like structures crucial for fluid transport and locomotion.
  • Understanding the energetic efficiency of cilia is key to comprehending their biological functions.

Purpose of the Study:

  • To introduce a novel measure for the energetic efficiency of biological cilia.
  • To numerically determine optimal ciliary beating patterns based on this efficiency criterion.

Main Methods:

  • Development of a new energetic efficiency metric for cilia.
  • Numerical simulations to identify optimal beating patterns for individual and collective cilia.
  • Analysis of ciliary coordination and density effects on efficiency.

Main Results:

  • Maximizing single cilium efficiency yields counterintuitive curly patterns.
  • Optimal patterns for densely packed cilia resemble those in Paramecium, featuring fast effective and slow recovery strokes.
  • Antiplectic metachronal waves achieve the highest pumping efficiency.
  • Efficiency increases with cilia density until crowding effects dominate.

Conclusions:

  • The study reveals optimal beating patterns for maximizing ciliary energetic efficiency.
  • Dense ciliary arrays exhibit efficient pumping through coordinated metachronal waves.
  • The findings suggest Paramecium's efficiency is near the theoretical optimum for microorganism swimming.