myoneme


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myoneme

[′mī·ə‚nēm]
(invertebrate zoology)
A contractile fibril in a protozoan. Also known as myofibril.
References in periodicals archive ?
The neatly arranged myoneme and densely distributed mitochondria were observed in the normal myocardium [Figure 12]a and [Figure 12]b.
Infraciliature and myoneme system of Campanella umbellaria (Protozoa, Ciliphora, Peritrichida).
Many cells in the highly folded mesentery filaments of the gastric cavity stain intensely acidophilic, and a series of parallel myonemes is visible.
The pattern of expression of [alpha]238305 is consistent with expression by gametes (it is unknown if this specimen is male or female) and in cells that make myonemes (the myofibril-like protrusions found in the pharynx, parietal muscle, and retractor muscle), but the cells expressing this integrin in the mesenteries near the pharynx are unknown.
2) Elongation of the body column is caused by the rhythmic potential (RP) pacemaker system, which causes a contraction of circumferentially arranged myonemes (Shibley, 1969).
The latter four cell types with bizarre shapes differ from ciliated epithelial cells, having apical microvilli and basal muscle cells containing myonemes.
It was composed of multiple layers of myonemes forming the circular, smooth, muscle fibers encompassing the oral region.