Which statement about anaerobic exercises is true?
you should leave at least a day between anaerobic exercises to let muscles rest and heal.
anaerobic exercise should last longer and be more intense than aerobic exercise.
during anaerobic exercise the muscles require a lot of oxygen.
anaerobic exercise is mostly intended to improve cardio respiratory endurance.
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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.