Write a paper (500-750 words) that addresses the following scenario.
John Doe is a 55-year-old male who suffers from high cholesterol. John is experiencing frequent chest pain, profuse sweating, dizziness, and shallow breathing. John later learns he had suffered an acute myocardial infarction.
1. What physiological response helped John to survive this heart attack?
2. What role did the immune system play, if any?
3. How has John's blood flow been affected by his heart attack?