This lecture delves into the molecular basis of cardiovascular diseases, covering atherosclerosis, hypertension, thrombosis, and heart diseases. It explores the drugs used to treat cardiovascular diseases, such as nitrovasodilators, calcium channel blockers, antagonists of the renin-angiotensin system, and HMG-CoA reductase inhibitors (statins). The instructor discusses the pathophysiology of atherosclerosis, the mechanisms of hypertension, and the development of drugs targeting these conditions.