Smooth muscle tissue more appropriate than cardiac tissue for circulatory pump?

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Offline roger858

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I was thinking that maybe the multidimensional nature of smooth muscle contraction, as opposed to the unidimensional nature of cardiac muscle contraction, [attachment=20997] [attachment=20999] may allow for more efficient contraction for a heart-shaped organ functioning as the circulatory system pump, than the current heart, specifically because a baglike pump like heart requires multidimensional contraction.
Any critique is greatly appreciated