Results 41 to 50 of about 2,497,161 (207)

A quantitative interspecies comparison of the respiratory mucociliary clearance mechanism. [PDF]

open access: yesEur Biophys J, 2022
Collectively coordinated ciliary activity propels the airway mucus, which lines the luminal surface of the vertebrate respiratory system, in cranial direction. Our contemporary understanding on how the quantitative characteristics of the metachronal wave
Burn A   +5 more
europepmc   +3 more sources

THE METACHRONAL WAVE OF LATERAL CILIA OF MYTILUS EDULIS [PDF]

open access: yesThe Journal of Cell Biology, 1972
The form of beat of cilia and the structure of the metachronal wave on the lateral gill epithelium of Mytulus edulis have been studied on living material by interference-contrast microscopy and stroboscopic illumination, and compared with the same ...
E. Aiello, M. Sleigh
semanticscholar   +4 more sources

Longitudinal to Transverse Metachronal Wave Transitions in an In Vitro Model of Ciliated Bronchial Epithelium [PDF]

open access: greenPhysical Review Letters, 2022
Myriads of cilia beat on ciliated epithelia, which are ubiquitous in life. When ciliary beats are synchronized, metachronal waves emerge, whose direction of propagation depends on the living system in an unexplained way. We show on a reconstructed human bronchial epithelium in-vitro that the direction of propagation is determined by the ability of ...
Olivier Mesdjian   +6 more
openalex   +5 more sources

Cilia-assisted hydromagnetic pumping of biorheological couple stress fluids [PDF]

open access: yesPropulsion and Power Research, 2019
A theoretical study is conducted for magnetohydrodynamic pumping of electro-conductive couple stress physiological liquids (e.g. blood) through a two-dimensional ciliated channel. A geometric model is employed for the cilia which are distributed at equal
K. Ramesh, D. Tripathi, O. Anwar Bég
doaj   +4 more sources

Multi-ciliated microswimmers-metachronal coordination and helical swimming. [PDF]

open access: yesEur Phys J E Soft Matter, 2021
The dynamics and motion of multi-ciliated microswimmers with a spherical body and a small number N (with 5 < N < 60) of cilia with length comparable to the body radius, is investigated by mesoscale hydrodynamics simulations. A metachronal wave is imposed for the cilia beat, for which the wave vector has both a longitudinal and a latitudinal component ...
Rode S, Elgeti J, Gompper G.
europepmc   +2 more sources

Role of cilia activity and surrounding viscous fluid on properties of metachronal waves [PDF]

open access: yesarXiv, 2023
Large groups of active cilia collectively beat in a fluid medium as metachronal waves, essential for some microorganisms motility and for flow generation in mucociliary clearance. Several models can predict the emergence of metachronal waves, but what controls the properties of metachronal waves is still unclear.
Dey, Supravat   +2 more
arxiv   +2 more sources

Mathematical modelling of pressure-driven micropolar biological flow due to metachronal wave propulsion of beating cilia. [PDF]

open access: yesMathematical Biosciences, 2018
In this paper, we present an analytical study of pressure-driven flow of micropolar non-Newtonian physiological fluids through a channel comprising two parallel oscillating walls.
N. Akbar   +3 more
semanticscholar   +4 more sources

Metachronal Motion of Biological and Artificial Cilia. [PDF]

open access: yesBiomimetics (Basel)
Cilia are slender, hair-like cell protrusions that are present ubiquitously in the natural world. They perform essential functions, such as generating fluid flow, propulsion, and feeding, in organisms ranging from protozoa to the human body.
Cui Z, Wang Y, den Toonder JMJ.
europepmc   +3 more sources

Spontaneous Synchronization of Beating Cilia: An Experimental Proof Using Vision-Based Control [PDF]

open access: yesFluids, 2018
This article investigates the formation of spontaneous coordination in a row of flexible 2D flaps (artificial cilia) in a chamber filled with a high viscous liquid (Re = 0.12). Each flap is driven individually to oscillate by a rotary motor with the root
Mohamed Elshalakani   +1 more
doaj   +4 more sources

Bilateral Asymmetry shown by the Metachronal Waves in Protochordate Gill Slits [PDF]

open access: bronzeNature, 1949
MULLER1 stated that metachronal waves travelled round the gill slits of Amphioxus "am vordern Rande aufwarts, am hinten abwarts" ; but he figured them moving in the opposite direction on the left side of the pharynx. Franz2 did not clear up the contradiction, though he, too, noted and figured the metachronal waves.
E. W. Jones
openalex   +4 more sources

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