<prompt> Myocardial oxygen demand depends upon-PreloadAfterloadIntramyocardial tensionBlood Hb concentration  <response>: Ans. a Preload, B. Afterload, C. Intramyocardial tensionRef: Ganong, 25th edp.611Primary determinants of myocardial oxygen consumption are,intramyocardial tensioncontractile state of the myocardiumheart rateVentricular work preload and afterload-Ventricular work is the product of stroke and mean arterial pressure 