si·no·spi·ral (si″no-spiґrəl) pertaining to the sinus venosus (sinus of venae cavae) and having a spiral course; said of certain bundles of cardiac muscle fibers. See also under fiber.

Medical dictionary. 2011.

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Look at other dictionaries:

  • sinospiral fibers — sinuspiral fibers spiral muscle fibers that begin near the posterior aspect of one or both atrioventricular fibrous rings and spiral upward in bundles within one or both ventricles …   Medical dictionary

  • sinuspiral — si·nu·spi·ral (si″nu spiґrəl) sinospiral …   Medical dictionary

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