Clyde and Julie are both on the treadmill at their apartment complex fitness center. Julie decides to increase the incline of the treadmill while walking. What effect will this incline change have on her exercise heart rate level? (2 points) a
Decrease her heart rate

b
Have no additional effect on her heart rate

c
Increase her heart rate

d
Stop her heart rate

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.