A set of three heart models, each approximately 50% actual size. One model shows normal heart anatomy. A myocardial infarction model demonstrates a partially healed heart and five discolored infarct areas, including a thrombus in the apex of the heart. The third model illustrates a heart with congestive heart failure as a result of hypertension. This model shows left ventricle hypertrophy and the enlarged and distorted shape of the heart is shown both internally and externally. Normal and myocardial infarction models measure 4 in. x 2-1/4 in. x 1-3/4 in., congestive heart failure model is 4 in. x 2-1/2 in. x 2-1/4 in.. The 8-3/4 in. x 6-1/4 in. base holds a 6-1/2 in. x 5-1/4 in. key card.