Overview Product Description Describes the heart, blood, and other parts of the body's circulatory system and explains how each component functions. Product Videos Custom Field Author Seymour Simon Binding Paperback Product Reviews Write a Review Write a Review × The Heart: Our Circulatory System by Seymour Simon Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *