bulbospiral

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• bulbospiral — bul·bo·spi·ral (bul″bo spiґrəl) pertaining to the root of the aorta (bulbus aortae) and having a spiral course; said of certain bundles of cardiac muscle fibers. See also under fiber …   Medical dictionary

• bulbospiral fibers — spiral muscle fibers that begin near the root of the aorta and spiral upward in bundles within the ventricles …   Medical dictionary