When blood supply to an area stops, that area becomes ischemic and later on infarction occurs. The pathogenesis of infarction is explained in detail in this video including its definition, causes, types, morphology. Timeline: 0:00 Introduction 0:29 Causes 0:44 Types of infarctions 1:08 Morphology 1:41 White infarct spleen 1:55 Gross Examination 2:05 Microscopic Examination 2:20 Red Infarct Lung 2:45 Microscopic Examination 3:08 Myocardial Infarction 4:51 Assignment