A middle-aged woman was admitted to the coronary care unit with a diagnosis of myocardial
infarction (define this). She was awakened in the middle of the night by severe chest pain.
Her skin was pale and cold, and moist sounds of pulmonary edema are heard over the lower
regions of both lungs. After stabilizing the woman, a 90% closure of the first part of the
circumflex branch of the left coronary artery was found. What parts of her heart
became ischemic (define this, please) and died? Explain how failure of this portion of the
heart might cause the symptoms listed above.