axoneme

[ak´so-nēm]

the central core of a cilium or flagellum, consisting of two central fibrils surrounded by nine peripheral fibrils.

ax·o·neme

(ak'sō-nēm),

1. The central thread running in the axis of the chromosome.

3. The distinctive array of microtubules in the core of eukaryotic cilia and flagella comprising a central pair surrounded by a sheaf of nine doublet microtubules.

[axo- + G. nēma, a thread]

Farlex Partner Medical Dictionary © Farlex 2012

axoneme

(ăk′sə-nēm′)

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.

ax′o·ne′mal adj.

ax·o·neme

(ak'sō-nēm)

1. The central thread running in the axis of the chromosome.

2. Synonym(s): axial filament.

3. The distinctive array of microtubules in the core of eukaryotic cilia and flagella comprising a central pair surrounded by a sheaf of nine doublet microtubules.

[axo- + G. nēma, a thread]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

axoneme

the complex of MICROTUBULES and associated tubes found in the shaft of a CILIUM or FLAGELLUM.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

In this article, we describe a case of bilateral maxillary sinus mucoceles that featured an absence of one of the microtubule doublets in three of the outer doublets of the axoneme, thereby establishing a diagnosis of isolated ciliary dysfunction.

An absence of cilia outer microtubules, an etiology not previously recognized in bilateral mucocele

Lumen region displaying spermiation and usual amount of cytoplasm around the axoneme (A).

Potential Radioprotective Effect of A[T.sub.1] Receptor Antagonists Against Morphological and Ultrastructural Changes in the Testes Induced by Ionizing Radiation/Potencial Efecto Radioprotector de Antagonistas del Receptor A[T.sub.1] Contra los Danos Morfologicos y Ultraestructurales en los Testiculos Inducido por la Radiacion Ionizante

(1996) Calcium-dependent bidirectional power stroke of the dynein arms in sea urchin sperm axonemes. J.

[Ca.sup.2+] and cAMP regulations of microtubule sliding in hyperactivated motility of bull spermatozoa

of a sperm flagellum showing the 9+9+2 axoneme (ax), accessory bodies (ab), mitochondrial derivatives (large md1 and small md2), and the puff-like corpuscle (arrow).

Ultrastructural characteristics of spermiogenesis in Rhynchophorus ferrugineus (Coleoptera: Curculionidae)

Since the distal centriole gave rise to the sperm axoneme during spermiogenesis, it is logical to suppose that the proximal centriole that is inherited by the embryo could cause aberrant mitosis as both are derived from the same mother centriole in spermatids.

Human centriole: origin, & how it impacts fertilization, embryogenesis, infertility & cloning

The axoneme of flagellum (9+2 microtubules) and its plasma membrane was extended symmetrically into two ridges that were clearly observed in TEM (fig.4c).

Environmental contaminant-induced spermatozoa anomalies in fish inhabiting Lake Mariut, Alexandria, Egypt

The basis of the axoneme is located close to the acrosomal complex.

The spermatozoa of the one-palped spider Tidarren argo (Araneae, theridiidae)

5A, 6D), and eventually in late spermatids (1.81 [+ or -] 0.32 [micro]m) condenses into a coarse granular pattern, whereas the nucleus assumes an ovoid shape and forms a basal indentation over the proximal segment of the axoneme (Fig.

Testicular development in migrant and spawning bluefin tuna (Thunnus thynnus (L.)) from the eastern Atlantic and Mediterranean

Genetic and biochemical studies in Chlamydomonas have revealed that a protein in the Chlamydomonas flagellar axoneme, radial spoke protein 3 (Rsp3), is an A-kinase anchoring protein (AKAP).

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Of these, the loss of an axoneme in the sperm's tail (male) and the loss of cilia on hexacanths and tails on plerocercoids (larval) occur more than once.

Macroevolutionary patterns of morphological diversification among parasitic fl atworms (platyhelminthes: Cercomeria)