Nayla has positioned a choking victim correctly so she can do the Heimlich maneuver. She places one hand flat on the abdominal area of the victim, and then places her other hand flat on top of the first hand. What is wrong with the position of Nayla’s hands? The first hand should be shaped into a fist, and the second hand should be flat. The first hand should be shaped into a fist, and the second hand should be sideways. The first hand should be shaped into a fist, and the second hand should grasp the fist. The first hand should be shaped into a fist, and the second hand should also be a fist.

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.