How might a person communicate directly with leaders about community health issues? check all that apply. 1. by participating in an interview on a local radio station 2. by holding a town hall meeting for legislators 3. by talking to family members about health issues 4. by making an appointment with the county board 5. by calling the region’s congressional representatives

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.