1Are any of the time intervals approximately constant? 2. With the…

Question Answered step-by-step 1Are any of the time intervals approximately constant? 2. With the… 1Are any of the time intervals approximately constant?2. With the exception of the R-R interval, which time interval shows the greatest difference between resting and post-exercise? Explain this observation.3. If the coronary arteries fill when the heart muscle is relaxed, what happens to the time course of coronary blood flow when the heart rate is increased?4. What happens to the amount of work done by the heart as the heart rate is increased?Would this explain why most heart attacks (periods when there is insufficient blood flow to parts of the heart) take place during physical exertion?  Biology Science Physiology MSE 2204 Share QuestionEmailCopy link Comments (0)