Which of the following statements about myocardial oxygen demand is true?
Myocardial oxygen demand is the amount of oxygen that the hea requires to maintain optimal function, and myocardial oxygen supply is the amount of oxygen provided to the hea by the blood which is controlled by the coronary aeries Ref: guyton and hall textbook of medical physiology 12 edition page number:246,247,248
Correlates with hea rate
Is directly propoional to external cardiac work
Is negligible when hea is at rest
Depends upon duration of systole
Nervous system