The smooth surface helps reduce friction between the beating heart and surrounding structures.
(The smooth surface; helps; reduce friction between the beating heart and surrounding structures) Context(The smooth surface helps,List([0, 24))):(The smooth surface; helps reduce; friction between the beating heart and surrounding structures)
The smooth surface helps,List([0, 24))
The smooth surface The smooth surface
helps helps reduce
reduce friction between the beating heart and surrounding structures
friction between the beating heart and surrounding structures