Match the phrase with the term. how hard the blood pushes on the inside of the blood vessels is called . the total amount of blood the heart pumps in one minute is called . when blood vessels open wider during exercise, they are said to . how many times your heart beats in one minute is called . the force that can put unhealthy tension on the heart as it is pumping is called . the amount of blood the heart pumps out in one beat is called .

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.