Contraction The rhythmic squeezing of the heart muscle that causes blood to be pumped out of the heart chambers and into the body.
(the heart muscle; causes; blood to be pumped out of the heart chambers and into the body) Context(the heart muscle causes,List([38, 66))):(blood; to be pumped; )
the heart muscle causes,List([38, 66))
the heart muscle blood
causes to be pumped
blood to be pumped out of the heart chambers and into the body