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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...
Microtubules in Cell Motility01:24

Microtubules in Cell Motility

Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
Microtubules in Cell Motility01:24

Microtubules in Cell Motility

Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
Microtubules in Signaling01:22

Microtubules in Signaling

The primary cilium, made up of microtubules, acts as antennae on the cell surfaces for relaying external stimuli into the cells. These fine hair-like structures are present, generally one per cell. These are non-motile cilia in a 9+0 microtubules arrangement, where the central pair of microtubules are absent. The primary cilia arise from the basal body embedded in the cell membrane. Intraflagellar transport (IFT) carries requisite proteins from the cytoplasm to the cilium because the primary...
Actin Polymerization and Cell Motility01:13

Actin Polymerization and Cell Motility

Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate.

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Related Experiment Video

Updated: Jun 23, 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

Ciliary motion modeling, and dynamic multicilia interactions.

S Gueron1, N Liron

  • 1Department of Mathematics, Technion-Israel Institute of Technology, Haifa 32000, Israel.

Biophysical Journal
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a new computational model for ciliary motion, improving upon Resistive Force Theory. It enables accurate simulations of single and multiple cilia interactions, advancing the study of ciliary beat patterns.

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Related Experiment Videos

Last Updated: Jun 23, 2026

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

Published on: July 13, 2015

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Area of Science:

  • Fluid dynamics
  • Biophysics
  • Computational modeling

Background:

  • Ciliary motion is crucial for biological fluid transport.
  • Previous hydrodynamic models like Resistive Force Theory (RFT) had computational limitations.
  • Modeling complex cilia interactions and boundary effects was challenging.

Purpose of the Study:

  • To develop a novel, computationally robust modeling tool for ciliary motion.
  • To overcome limitations of existing hydrodynamic analyses for cilia.
  • To enable accurate simulations of single and multiple cilia, including boundary and interaction effects.

Main Methods:

  • Modified Lighthill's (1975) hydrodynamics analysis to resolve computational issues.
  • Integrated the modified hydrodynamics into a moment-balance model for ciliary motion.
  • Incorporated effects of a basal plane surface and flow fields from neighboring cilia.

Main Results:

  • Developed a general and accurate modeling tool for ciliary motion.
  • Successfully simulated single cilium dynamics and multicilia interactions.
  • Extended modeling capabilities beyond the scope of Resistive Force Theory.

Conclusions:

  • The new model provides a powerful method for studying ciliary beat patterns.
  • Enables detailed analysis of metachronal wave interactions in ciliary arrays.
  • Facilitates advanced research in biological fluid dynamics and biomechanics.