Which of the following is NOT true about body composition? A. To improve your body composition, eat a diet low in fat and calories.
B. Your weight alone can determine your percentage of body fat.
C. To improve your body composition, exercise on a regular basis.
D. Body composition is determined by your percentage of body fat to lean body mass such as muscle, bone, and tissue.

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.