Heart Complete labeled illustrations of the sections of the heart and their functions. Illustrations by award-winning medical illustrator Vince Perez. This guide includes detailed diagrams of: circulation, anterior heart, posterior heart, interior heart, nerves and arteries, beginning of diastole, end of diastole, systole, end of systole, heart in diastole, and heart in systole. Product photo may not exactly match the product offered for sale. Please refer to the product description.