The dissection of the mammalian heart in secondary biology classes need not be restricted to revealing the internal structure of the heart and its function. It could also be used to demonstrate other important aspects of blood circulation, including the blood supply to the heart itself as well as the causes and effects of coronary heart disease. The activities described in this paper serve to enrich this kind of classical dissection and extend its objectives to address new curricular emphases on Science-Technology-Society themes. (Contains 11 figures.)