Which would be a good example of disinfecting a surface? a. You use a solution to remove microorganisms from sheers that will be reused
b. You use soap and water to remove dirt and dust from a hard surface
c. You use a product on the mirror to remove dust
d. You use a solution to wash a customer’s hair

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.