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A bundle of microtubules and associated proteins that makes up the core of a cilium or flagellum, consisting of nine pairs of microtubules arranged around two single microtubules.

[Greek axōn, axis + Greek nēma, thread; see (s)nē- in Indo-European roots.]

ax′o·ne′mal adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


the part of a cell, consisting of proteins and microtubes, which forms the core
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈæk səˌnim)

the shaft within a flagellum or cilium, containing twenty microtubules arranged as nine doublets and two singlets.
[1900–05; < Greek áxōn axis + nêma thread]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
It is well known that ice crystal formation in mitochondria and axonemes during cryopreservation impairs sperm individual motility (Courtens et al., 1989).
McIntosh, "The molecular architecture of axonemes revealed by cryoelectron tomography," Science, vol.
For instance, ICCD cameras were used to visualize single kinesin motors moving on axonemes (Vale et al., 1996), the blinking of green fluorescent protein (GFP) molecules (Dickson et al., 1997), and in demonstrating that FI-ATPase is a rotational motor that takes 120-degree steps (Yasuda et al., 1998).
Proteomic analysis of bovine axonemes exposed to acute alcohol: Role of endothelial nitric oxide synthase and heat shock protein 90 in cilia stimulation.
(1977) Observations of the structural components of flagellar axonemes and central pair microtubules from rat sperm.
N = nucleus, ax = tail axonemes, c = centriolar region, mt = microtubules.
They are composed of central axonemes containing 9 pairs of micro tubules that form a circle around 2 central micro tubules.
Sisson, "Both cAMP and cGMP are required for maximal ciliary beat stimulation in a cell-free model of bovine ciliary axonemes," American Journal of Physiology--Lung Cellular and Molecular Physiology, vol.
Effects on the motility of intact spermatozoa and on sperm axonemes. J Androl.
Molecular cloning and characterization of a radial spoke head protein of sea urchin sperm axonemes: involvement of the protein in the regulation of sperm motility.
Trypanosoma cruzi: antigenic composition of axonemes and flagellar membranes of epimastigotes cultured in vitro.