Where would the following activity BEST fit on the physical activity pyramid? Gardening The Physical Activity Pyramid: Top level of pyramid is Sedentary activities, Second level is Anaerobic and Flexibility activities, Third level is Aerobic activities, and bottom level is Lifestyle activities. A. sedentary activities B. anaerobic activities C. aerobic activities D. lifestyle activities Please select the best answer from the choices provided. A B C D

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.