Juan's wife brought him to the emergency room because juan could not remember his name, the names of his family members, where he worked, or any other personal information. extensive tests at the hospital indicated that juan's memory problems were not due to an injury, an illness, drugs, or any other physical or medical condition. a clinical psychologist suggested that juan might be suffering from

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.