Select the correct answer. Which of the following is a correct description of how you should determine your RPE? A. Base your ranking on how bad your legs feel B. Base your ranking on how out of breath you are C. Base your ranking on total feelings of exertion D. Base your ranking on how you compare to your friend's score

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.